Gaia, the spirit of the Earth, summons four teenagers and a young boy named Ma-Ti from five different corners of the world to help her in the battle to save the planet. For their first assignment, the Planeteers battle Hoggish Greedly, whose oil rig operation is jeopardizing the coastline.

• Note: First appearances of Captain Planet, Gaia, the Planeteers (Kwame, Wheeler, Linka, Gi and Ma-Ti), Hoggish Greedly and Rigger.

Ma-Ti battles self-esteem issues as the Planeteers try to stop Verminous Skumm from destroying a city with a giant cloud of acid rain.

• Note: First appearance of Verminous Skumm.

The Planeteers travel to Thailand in order to prevent Greedly and Rigger from surface mining for rubies and terrorizing the people.

When Verminous Skumm contaminates the water supplies of South America with a disease known as "rat rot", which turns its victims into rat-human hybrids, it's up to Kwame and Ma-Ti to find a cure when the other Planeteers become infected.

Dr. Blight and Duke Nukem hold Captain Planet prisoner in Antarctica, demanding that the Planeteers give them a lifetime supply of nuclear waste in return for his safety. Without their powers, the Planeteers must mount a daring rescue in order to save Captain Planet.

• Note #1: First appearance of Dr. Blight, MAL and Duke Nukem.
• Note #2: First case of Eco-villains working together.

The Planeteers are led astray by the promise of power from Zarm, a war-like god and another spirit of Earth, like Gaia. Zarm dazzles the Planeteers into telling them that they can create an environmental utopia on Earth and gets them to follow him instead of Gaia, save for Ma-Ti, whose loyalty to Gaia is the strongest. With the Planeteers split up, Gaia becomes mortal and increasingly weaker. Can Ma-Ti convince the Planeteers that Zarm's true intent is to instigate a nuclear war?

• Note: First appearance of Zarm.

Wheeler plans to buy Linka an ivory necklace for her birthday, but Kwame recommends anything except that for a gift. Meanwhile, Looten Plunder is wiping out the elephant population of Africa, Kwame's native land, in order to gain a quick profit in the ivory trade. Wheeler learns firsthand the true cost of ivory trinkets, as he and the other Planeteers help return a baby elephant to its mother and battle to save the elephants from extinction.

Note #1: First appearance of Looten Plunder and Argos Bleak. This is also the episode that sees Plunder uttering of the famous line "You'll pay for this, Captain Planet!", which would resonate throughout the end credits for the series.

Note #2: While some episode listings have the title as "The Last of her Kind", the episode title as it appears on-screen in the episode itself is written merely as "Last of her Kind".

Hoggish Greedly and Rigger scheme to catch and sell all the fish in the ocean with a fleet of illegal drift net fishing boats. When Greedly steals their rings, the Planeteers are forced to use their initiative to retrieve them and save thousands of marine animals from the eco-villains' deadly nets.

Dr. Blight and her robojacks chop down a sacred tree known to villagers as the "Tree of Life" and Blight harnesses the tree's powers for herself. With her new powers, Blight grows gigantic and a match for Captain Planet, then plans to destroy the ancient redwood forests.

Special Guest Star: Floyd Red Crow Westerman as Old Indian Man.

Sly Sludge, who claims to have solved the world's problems of waste management by inventing a shrink ray that reduces garbage, is making big bucks by having countries ship their garbage to him for disposal. However, Sludge is secretly only dumping the garbage into a volcano on Laipuno Island. When the volcano erupts, Captain Planet and the Planeteers must save the islanders from the lava flow.

• Note: First appearance of Sly Sludge.

When the Planeteers stop a bus full of elementary school students from diving off a cliff, nine-year-old Jason, one of the students, follows the Planeteers home and idolizes Wheeler. When Wheeler suffers from second degree burns which renders him unable to use his ring, Jason steals Wheeler's ring and tries to single-handedly battle Dr. Blight's newly created smog monster, which feeds on air pollution, Jason learns what it really means to be a Planeteer. Later on, Captain Planet makes Jason an honorary Planeteer.

After Gi is rescued from Sly Sludge's mechanical octopus, she is taken to a secret underwater city known as Oceanus, which is being threatened by Sludge's illegal toxic dumping. When the dome around Oceanus begins to burst, flooding the city, Captain Planet and the Planeteers must race against time to save the people of this underwater paradise.

• Note: First appearance of Sly Sludge's right hand man Ooze.

Looten Plunder dams an African river and installs a large hydroelectric power plant, cutting off water supplies to the villages. Gaia warns that only carefully engineered dams are beneficial. The villagers soon realize that Plunder's electricity is not a fair trade for the food and water that the river provided. With their crops dying and thirst-crazed elephants on the rampage, they enlist the help of the Planeteers to stop Plunder's scheme. The Planeteers then build a wisely placed dam to balance proper river flow with electrification of the village.

When a scientist tries to cover up a radiation leak at a nuclear power plant, Duke Nukem zeros in on the "hot spot" and triggers a meltdown. With time running out, Captain Planet and the Planeteers are forced to cool off the reactor before an explosion occurs and contaminates the planet. When the scientist admits that he supported nuclear power on the basis it was clean and plentiful in an attempt to solve the energy crisis, the Planeteers recommend he instead research geothermal power.

• Note: First appearance of Duke Nukem's right hand man Leadsuit.

Greedly hijacks Jane Goodair's environmentally friendly automobile factory in order to manufacture his Road Hog, a smog-spewing nightmare, and the city is soon choking on exhaust fumes. When his own son, Greedly Jr., falls ill from the pollution, Greedly must turn to Captain Planet and the Planeteers for help.

Special Guest Stars: Phyllis Diller as Jane Goodair and Charlie Schlatter as Hoggish Greedly Jr.

Sly Sludge, Dr. Blight and her computer, MAL, hack into the government's computer system in order to obtain phony legal documents allowing them to change all the national parks into giant toxic waste dumps. In addition, they falsify the criminal records of the Planeteers and cleans up Sly Sludge's background check to make him look like a committed environmentalist.

Four of the main eco villains (and their henchmen) join forces in a plot to pollute a city's water supply so they can sell their bottled water to thirsty citizens at outrageous prices. Captain Planet and the Planeteers set out on a mission to find pure water and break up the "Pollution Syndicate".

Sly Sludge is burying a small town under garbage and the townspeople don't seem to care. Feeling he can't make a difference, Kwame leaves the Planeteers, but a young girl's single-handed recycling effort restores his faith, and with her help he attempts to save the Planeteers from Sludge's giant trash compactor.

Duke Nukem destroys the ozone layer over Antarctica with C.F.C. gases so he can feast on the sun's dangerous UV rays. Captain Planet and the Planeteers battle to protect the Earth from Nukem's deadly radiation.

• Note: First unmasked appearance of Leadsuit.

Looten Plunder instigates a war between two desert villages so that he can sell firearms to both sides. When the Planeteers try to expose his scam, he imprisons them in a toxic trap. With bombs exploding around them, it is up to two young boys from the opposing villages to make their parents see sense, free the Planeteers and help stop the destruction.

The Planeteers learn that the world is very overpopulated and some countries try to slow it down. Wheeler, annoyed at the idea of anyone recommending how many children to have, goes out windsurfing despite an approaching storm. He is blown off-course and is washed up on an island with a miniature city. The inhabitants, genetically affected mice with human characteristics including overpopulation and its resulting polluted land, capture Wheeler for food. Wheeler also learns the mouse civilization is a dictatorship whose junta plans to invade and colonize Hope Island.

5 of the main eco-villains steal the Planeteers' rings and abandon them on an island inhabited by Commander Clash, a soldier with a cold war mentality. Clash appears to be their most dangerous opponent to date, until Captain Pollution, summoned by evil duplicates of the Planeteers' rings created by Dr. Blight, appears and traps them.

Special Guest Star: Louis Gossett Jr. as Commander Clash.

The Planeteers befriend Commander Clash and convince him to help them retrieve their rings and use his military skills in the battle against Captain Pollution.

Special Guest Star: Louis Gossett Jr. as Commander Clash.

The Planeteers' mission to prevent Dr. Blight and Greedly from travelling back in time to speed up global warming takes a turn for the worse. When Wheeler gets chastised for messing up, he doubts his own worth as a Planeteer. Dr. Blight sweet talks Wheeler into forgetting the Planeteers, and has MAL send Wheeler back in time and alter his past. Wheeler accepts and convinces his past self to get rid of his Planeeter ring. However, Wheeler is then sent forward 35 years into the future (2026), where he sees first hand how his actions end up drastically changing the future.

Traveling back in time so that he never becomes a Planeteer, Wheeler jeopardizes the survival of life on Earth. Gaia told Wheeler that after he traveled back in time to get rid of his Fire ring, he has changed the history and when Wheeler asks Gaia why somebody else wasn’t chosen to become a Planeteer instead of him, Gaia reminds him that he was supposed to set an example for countless others and since he declined to be a Planeteer, the Planeteers went their separate ways and there was no Captain Planet. After Wheeler changed his past, Dr. Blight sent Hoggish Greedly and Rigger back in time to the 1950s to take advantage of lower environmental standards. When Gaia gives him the chance to go into the future and see the consequences of his actions, he sees all sorts of environmental disasters. He also meets aged versions of his fellow Planeteers who are struggling by themselves to fend off problems, as well as a powerful and super-rich Hoggish Greedly and Rigger who have taken over Hope Island, made Gaia die as her hut is now a toxic waste dump and made Hope Island into Las Vegas type Glitter and Glamour place. Wheeler realizes how much he, along with every individual, contributes to the future of the planet.

Dr. Blight attacks Hope Island by encasing it in a dome then using her smog-spewing barge to create a greenhouse effect. With Gaia's life in danger, the Planeteers enlist the help of a giant whale to break free from Blight's heat wave and call Captain Planet.

Visiting her cousin Boris in Washington, D.C., Linka finds out he is under the influence of a designer drug known as 'Bliss', peddled by Verminous Skumm. Boris spikes Linka's food with Bliss, turning her into an addict, and the other Planeteers must try to help her break her addiction while also trying to stop drug-fueled riots from breaking out across the city but they are too late to save Boris. This is one of the darkest Captain Planet episodes, showing not only the heavy corruption of one of the series' protagonists, but also the death of her cousin Boris.

To make fast cash from a trash strike, Sly Sludge steals an untested microbe from Dr. Helix, a scientist admired by Gi. The microbe was supposed to be a technological fix for the problem of overflowing landfills, but it simply absorbs trash to become a city-devouring garbage monster.

It's up to the Planeteers to stop Looten Plunder after he hoodwinks the world into signing over its forests to his care, then covers them with giant domes and sells the cooled, clean air from these "air conditioners of the planet" at astronomical prices.

Kwame befriends Leela, a schoolgirl on the island of Mogahl whose parents keep having children, hoping for another son. They get their wish when Looten Plunder and Dr. Blight, looking for cheap labor, turn their cloning ray on Leela's brother Vico, who doubles in number each time he eats. Soon Vico numbers in the millions and, along with an accidentally cloned locust swarm, threaten the island's food supply.

In the Florida Keys, Ma-Ti has a brush with what he thinks is a giant man eater, though Gi reveals that it is a harmless basking shark. But panic spreads through the resort town, which hires Argos Bleak to eradicate all the sharks in the bay. When stinging jellyfish, which the sharks used to feed on, swarm the beach, the townspeople learn that predators have an important role in the ecosystem.

The Planeteers find themselves whisked aboard an interstellar Noah's Ark, while trying to save endangered tigers from Hoggish Greedly and Dr. Blight's forest-destroying Monster Golf Cart in India. The alien zookeeper named Collector thinks humans are an endangered species, whose habitat is about to be destroyed.

Special Guest Star: Fred Savage.

The Planeteers stumble across the island of Dr. Apollo, an American scientist who has perfected incredible devices for storing and transmitting solar power. They discover that the laboratory assistant is actually Leadsuit, who is helping Duke Nukem subvert solar technology to produce a radioactive weapon.

Special Guest Stars: Danny Glover as Dr. Apollo and Cree Summer as Karen.

Hoggish Greedly and Rigger teach Tacio, a struggling Filipino fisherman, how to go dynamite fishing, without telling him the irreversible damage it does to the fish population and to the coral reef. It is all a cover for Greedly's underwater Reef Ripper, which is harvesting the shattered coral. But Gi takes Tacio's wife, Marcaria, underwater, and then to an impoverished, wave-battered island nearby, to show what can happen when a protective reef is gone.

The people of San Francisco are collapsing with symptoms that suggest a whole range of pollution poisoning. As the Planeteers follow clues to solve this mystery, Ma-Ti, who has been reading 1940s detective novels, keeps imagining himself as a private eye. Ma-Ti proves a poor sleuth at first, but eventually traces the source of the illness to Verminous Skumm, who is serving seafood tainted by storm drain runoff in his restaurant, The Sinking Ship, where he has captured the other Planeteers and intends to poison them.

Sly Sludge and four of the Planeteers learn first hand the terrible effects of untreated sewage when MAL and Dr. Blight shrink the EcoSub (and them) to microscopic size and put them into polluted water, which Kwame unwittingly drinks. The Planeteers must battle hideous water-borne parasites in Kwame's body so that he can recover, and restore themselves to proper size.

Looten Plunder and Argos Bleak exploit an agricultural worker's hidden shame - illiteracy - by putting the man in charge of spraying pesticides. He can't read the written warnings, and as a result he uses too much pesticide, creating a lethal cloud that threatens a nearby town.

Pete, a dirt bike enthusiast, loves off-road racing with Hoggish Greedly and Rigger, until Ma-Ti and desert guide Joshua Stone show him how alive this "barren" desert really is, and how much damage off-road vehicles do to it. Pete and the Planeteers swoop in on hang gliders to stop Greedly's ORV race, but Captain Planet is needed to save everyone from a flash flood.

Special Guest Star: Dennis Weaver as Josh.

The Planeteers are present for the testing of JASON, a robot that observes wildlife and the environment, and transmits the data to its home base. The tests are being done on the Galapagos Islands, which is where Hoggish Greedly, Verminous Skumm and his rats have crash landed, since their ship was thrown off course from a storm. Now, they're hungry, and consider feasting on tortoise eggs to fill their appetites. The Planeteers must fly to the Galapagos to save the eggs, and remove the rats from the environment to restore the balance of its ecosystem.

• Note: First time Linka reciprocates Wheeler's crush on her by kissing

Gi and Linka are livid when Wheeler belittles their favorite rock singer, Sky Runner, but it looks as though Wheeler may be right when they come upon a land-ravaging surface mining operation run by Hoggish Greedly, but bankrolled by none other than their idol.

Special Guest Star: Robby Romero as Sky Runner.

Gaia becomes suspicious when air pollution suddenly skyrockets in an Australian city with one of the best mass transit systems in the world. The Planeteers investigate and discover that Looten Plunder and Argos Bleak are behind the problem. They are making it appear that the transit line is haunted, allowing them to profit from a massive freeway system and auto-related businesses.

Linka and Ma-Ti visit a friend, Juan, in Central America. While there, Juan's parrot, El Profesor, leads them to a secluded "bird paradise" when a giant, metallic bird appears. All the birds, including El Profesor, follow it, as do Linka and Ma-Ti, who soon find themselves locked in a giant aviary, courtesy of Hoggish Greedly, who is running an exotic bird smuggling venture.

At the Earth Summit in Rio de Janeiro, the Planeteers are impressed by the proposed ecology measures, until the world leaders suddenly reverse their positions – victims of Zarm's treachery, who has united Hoggish Greedly, Looten Plunder, Sly Sludge, Duke Nukem, Verminous Skumm, and Dr. Blight under his leadership. He then tricks the Planeteers into giving up their rings and traps them on his spaceship. Zarm then zaps Gaia into human form, aging her and destroying the planet simultaneously. The Planeteers' only hope is to find Commander Clash.

After discovering that it is ten years later outside Zarm's ship, the Planeteers race to find Commander Clash before Gaia ages into dust. He returns with them and fights Zarm, but is defeated and opts to return to his island. The Planeteers refuse to give up and are recaptured and taunted by Zarm. He is just about to decimate Ma-Ti when Clash reappears and saves Gaia and the Planeteers.

Special Guest Star: Louis Gossett Jr. as Commander Clash.

Kwame takes the Planeteers to Africa to meet an old friend from his tribe, Dr. Mabutu, who is experiencing trouble on his game ranch. The trouble is Dr. Blight, whose experiments turn ordinary cattle into "raging bulls", which threaten to destroy the entire region. When they go on a rampage, it is up to Captain Planet to hit the trail and corral the "bum steers".

• Note: First time Dr. Blight reveals the scarred portion of her face to the Planeteers. in one scene, Blight's face is mirrored.

During an earthquake, a blow to Wheeler's head leaves him lost from the others and suffering from amnesia. He finds himself literally in the shoes of a homeless man, and learns that the only difference between himself and them is a simple twist of fate. Wheeler regains his memory and returns to help the other Planeteers call Captain Planet to save the girl who saved his life.

The Planeteers travel to the Northwest after hearing about an old growth forest which is literally disappearing into thin air. After Wheeler sets out to investigate, along with an attractive local teenage bird watcher, Linka spots a "flying saucer" but they then discover that Hoggish Greedly is the pilot. They discover Greedly's scam -"Sucking up" five-hundred-year-old trees to make pressed board furniture.

Production Code: 219^[10]

The Planeteers again confront Zarm when he inhabits the body of a national dictator and implements a "Scorched Earth" policy to rid his country of interloping environmental activists eager to prevent development on the beach and forest areas. Zarm is revealed to have been behind every dictator in human history.

Verminous Skumm and a member of his Rat Pack use tainted cheese to infect Venetian canal rats with a deadly disease, which they then begin to spread throughout the city.

Sly Sludge and Duke Nukem collaborate to dump toxic waste in the Amazon rainforest, imperiling Ma-Ti's village. Ma-Ti returns to see the Shaman and when the Planeteers arrive, they find the village in flames. Although they are able to extinguish the blaze, Ma-Ti is filled with anger. He slips away to capture the villains, but is captured himself, and it is up to the other Planeteers to save him.

The Planeteers are shocked to see a mother whale killed during a whaling expedition engineered by Dr. Blight and Looten Plunder, but they are even more shocked to learn that it is legal, due to a loophole in the international laws, allowing whaling for the purpose of research. They set out to prove that Blight's research for a "whale repellent" is bogus, and are helped by a young Japanese teenager who is trying to dissuade his whaler father from working for Blight and Plunder.

After being chided for watching futuristic thriller movies, Kwame suddenly finds himself and his fellow Planeteers fighting for survival in a surreal, gang-dominated world ruled by Skumm and Dr. Blight. When Dr. Blight turns the other Planeteers into punks, Kwame's only ally is Darian, leader of Utopia, the last unpolluted refuge on the planet.

When Dr. Blight convinces the President of the United States to let her create a fuel for a spaceship trip to Venus, the Planeteers try to change his mind by showing him the accelerated greenhouse effects from fuel's emissions. MAL however takes control of the rocket and sends Kwame, Ma-Ti and the President to crash land on Venus while an underpowered Captain Planet must save the rest of the Planeteers.

• Note: First time Captain Planet is formed without all 5 rings.

The Planeteers must stop a rampaging giant squid from threatening a small fishing town after it is mutated by toxins from Sly Sludge's illegal waste dumping operation.

The Planeteers are called into action to stop Duke Nukem from stealing radioactive minerals and using them for his own sinister purposes, and to save a town from being exposed to lethal amounts of radiation.

Note: This episode is based on a real-life incident called the Goiânia accident, where a sample of highly toxic cesium-137 was misplaced from a recycled radiotherapy machine, sold, and resulted in the deaths of four people.

Dr. Blight takes on a paraplegic scientist (Dr. Derek), but what Dr. Blight doesn't count on is the Planeteers calling Captain Planet, who infects Blight's computer and gives MAL a computer virus.

Carlos, an Hispanic farm boy on a small island, becomes jealous of his cousin's return from the big city. He is given the power to wish for anything he wants from Zarm, who calls himself the Dream Maker. To impress a girl that he likes and to get back at his cousin, Carlos wishes for things that will gain her interest. Soon the whole town discovers the Dream Maker, and they all want something big. Blinded by greed, the townspeople fail to realize that their natural resources are being drained in a flagrantly careless and destructive manner in order to create the things they wish for. They soon learn the effects of this, but the Planeteers need Captain Planet to get rid of Zarm, and quell a near war between the townspeople and the villagers in the hills, who also want a piece of the Dream Maker.

Special Guest Star: Oren Lyons

Sky Runner returns to ask the Planeteers for help after Looten Plunder tricks his people into selling their lands for urban development.

Special Guest Star: Robby Romero as Sky Runner.

Dr. Blight's minions have been capturing animals from Dr. Rice's animal shelter for her experiments that she runs under the nose of her employer Laurie Saunders and it's up to the Planeteers to stop her.

Special Guest Stars: Lou Rawls as Dr. Rice and Vanna White as Laurie Saunders.

Hoggish Greedly, Rigger, and Sly Sludge travel back in time to create the biggest trash crisis in the Earth's history, and the only one who can stop them is Captain Planet.

Named loosely after Gunfight at the O.K. Corral, a real historical event that happened around 1881 in Tombstone, Arizona.

Hoggish Greedly is behind a "canned" hunt, and captures Captain Planet and the Planeteers.

Gaia tells the Planeteers about Captain Planet's first adventure in the 1940s, when he and the Planeteers before them stopped Hoggish Greedly's grandfather, Don Porkaloin from building developments too close to the ocean. To prepare for a Hurricane Kira, Porkaloin's lounge singer/scientist Betty Blight (Dr. Blight's grandmother) uses her moon manipulator to bring the hurricane to his shores. When the Planeteers of that time are formed, Captain Planet is summoned to save the day.

Special Guest Star: Ed Begley, Jr. as Zoning Commissioner.

When a high school basketball player named Todd Andrews finds out he has HIV/AIDS, Verminous Skumm and one of his Rat Pack minions start rumors about the disease that turn Todd's schoolmates against him, hoping to spread the disease further.

This was one of the first times that an American animated series dealt with the issue of AIDS education.

Special Guest Stars: Neil Patrick Harris as Todd Andrews, Danica McKellar as Lisa, and Elizabeth Taylor as Todd Andrews' Mother.

The Planeteers go on separate missions across the world to prevent the detonation of three separate nuclear bombs in three major conflict zones between warring factions. Verminous Skumm and Duke Nukem are behind the plot of inciting hatred to get people into nuking each other. The main story sees Wheeler arrive in Northern Ireland where the conflict is between the Protestants and the Catholics. Kwame and Linka travel to South Africa where the blacks and whites are raging battles. Gi and Ma-Ti travel to Israel where tensions are high between Palestinians and Jews.

The episode's portions set in Belfast have become a popular viral internet meme; its wildly inaccurate accents and depictions of the Troubles have been met with large degrees of mirth from Northern Ireland inhabitants, when originally released in the US it was viewed by the Northern Ireland government and banned from release in the third season run in Northern Ireland.

Special Guest Star: Kenneth Mars as Moisha Lowkowitz.

When Looten Plunder introduces the "Robo-Wolf", can the real wolves put a stop to it?

While the Planeteers argue about their priorities concerning different ecological problems, Sly Sludge dumps waste in a salt mine. Pausing their dispute Gaia assigns the Planeteers to intervene. Shortly after another ecological disaster takes place close to Commander Clash's island. Not being able to handle both at the same time, the Planeteers decide to summon Captain Planet for managing the latter, while themselves chasing after Sludge. However they do not notice, that the island's contamination revived Captain Pollution, who instantly starts a fight against Captain Planet. To make things worse, the Planeteers fall into Sly Sludge's trap, who traps them in the mine. This episode reveals some of Ma-Ti's past and thereby some of his motives for environmentalism.

Captain Planet destroys Captain Pollution for good by throwing him in a natural lava vat. In addition, Kwame, Gi, Wheeler, and Linka each reveal some of their own past.

Hoggish Greedly is behind a mystery involving Louisiana black bears. The Planeteers call Captain Planet who puts an end to Greedly's evil plots.

Linka's Grandmother suffers from an undiagnosed illness, causing Linka to leave the Planeteers and return to her home town. Because half the town is affected, she investigates the reason of the problem. Wheeler, unable to abandon her, secretly stays in town – and helps Linka, as soon as the situation gets dangerous to her. Meanwhile the other Planeteers worry about getting her back. The Planeteers combine their powers to call Captain Planet to save Linka's town.

Note: This is the first and only episode where Linka and Wheeler share a passionate kiss, and openly confirm their romantic feelings for each other.

Dr. Blight succeeds in constructing a machine, which switches the minds of two affected bodies. Using this machine, she gets into the body of Gaia (as well as Gaia gets into hers), in this way gaining Gaia's powers of nature and also fooling the Planeteers. Imprisoned in Blight's body, Gaia has to find and convince the Planeteers, if she wants her own body back.

The Planeteers struggle with trying to return endangered species to their habitats as they are being destroyed by the Eco-Villains and other polluters. They end up rescuing far more animals than returning, to Gaia's dismay.

Gi is invited to a dolphin research center in which provides dolphins to Hoggish Greedly, who is behind a number of dolphins getting hurt due to his use of them to collect toxic waste from a submarine.

Special Guest Stars: Dionne Warwick and Ed Begley Jr.

Zarm travels to a heavily polluted future timeline and rounds up the great-great-great-grandchildren of Dr. Blight, Looten Plunder, and Verminous Skumm from the future to take on Captain Planet and the Planeteers. They are no match for the Eco-Villains from the future even when the future Eco-Villains ally with Dr. Blight and Looten Plunder. They call Captain Planet, who gets trapped in a toxic acid bubble. Gaia summons the Planeteers from an unpolluted alternate future, who call their future Captain Planet. In the end, a small action from Ma-Ti involving saving a girl from a flood and the future Eco-Villains ends up securing the cleaner future, causing the polluted timeline to vanish and the future Eco-Villains to be erased while Dr. Blight, Looten Plunder, and Zarm get away.

Transported to ancient Maya, Ma-Ti is captured and mistaken for the son of environmentally minded rebels.

Special Guest Star: Héctor Elizondo as Shanoub.

In this story about street gangs, Wheeler gets a letter from his hometown in New York with some bad news: his father, whom Wheeler never had a close relationship with, is ill. So Wheeler heads back to his hometown, where he bumps into his old friends. Among the friends Wheeler bumps into is Trish, who now goes by the nickname of "Trash", who has turned to crime. Her boss is none other than Verminous Skumm.

Special Guest Stars: George Hearn as Wheeler's Dad, Marilyn McCoo as the TV News Reporter, and Marcia Wallace as Wheeler's Mom

Duke Nukem and Dr. Blight wreak havoc in Canada. Only Captain Planet can stop Nukem before he destroys the Earth. This episode parodies many classic horror films: Blight's hair makes her look like the Bride of Frankenstein, where Duke Nukem has bolts like Frankenstein's monster on his neck, Leadsuit walks around like Igor after an injury, and Duke even acts like King Kong at the end.

The Planeteers go undercover to investigate a series of mysterious explosions at a plant. It looks like the owner's son is behind them, but Hoggish Greedly is behind the explosions, and the Planeteers call Captain Planet, who puts an end to the mystery, and captures Greedly.

Goki, a boy from the future where gorillas are extinct, is given a virtual reality goggle by a mysterious woman that sends him into the past around the time when Looten Plunder tries to get rid of some gorillas. With Goki's help, the Planeteers call Captain Planet to stop him. At the end, Goki receives the power of Earth as a Planeteer, and the woman is revealed to be Gaia.

Special Guest Star: Kadeem Hardison as Goki.

Vermenous Skumm plans to terrorize the earth with his wicked weevils. But Captain Planet stops him.

Special Guest Star: Robert Guillaume

This episode features a game show "You Bet Your Planet" in which the Planeteers competed against the Eco-Villains. The game show is hosted on an alien planet, with aliens for the audience and the host Lexo Starvak, and a big mouth for the announcer. The prize is the fate of Captain Planet.

Special Guest Stars: Casey Kasem as Lexel Starvack and Gene Wood as Game Show Announcer.

Note: The big mouth is re-used in the Season 6 opening sequence.

The Planeteers investigate a movie producer named Robin Plunder (who turns out to be the nephew of Looten Plunder) when the bats are being framed for terrorizing people. Captain Planet stops Robin in his tracks and expose his bat-discrediting plot.

The Planeteers are shocked when Hoggish Greedley got a permit from an Army Corps of Engineers official (voiced by Kevin Conroy) to build houses by wetlands. When they tried to stop them, Greedley has them and Captain Planet arrested and thrown in jail. Greedley tricks the hick Sheriff (voiced by Sorrell Booke) that the Planeteers escaped from jail. So the Planeteers get some evidence to expose Greedley and free Captain Planet from jail.

Looten Plunder is behind a plan to ruin an environmental sustainable ranching operation. The Planeteers call Captain Planet, who defeats Plunder and Plunder is hauled off to jail again.

Special Guest Stars: Hoyt Axton as Big Ed Baker, Manu Tupou as Imoto and Dennis Weaver as Dusty.

Dr. Derek constructed a simulation of a condensed version of Earth, featuring different biodomes. It was an experiment to demonstrate the consequences of pollution and how it will destroy the world, simulating a few centuries in ninety minutes. The Planeteers are visiting the land containing mutated animals with the scientist and plan to leave after 30 minutes, but Dr. Blight locks them in. The Planeteers cannot use their rings individually because the simulated world has an effect on them, but they can combine them to summon Captain Planet. However Captain Planet cannot survive long in the world due to the intense pollution. The Planeteers and the scientist must find a way out, before it is too late.

The Slaughters, a poaching mother/son team, abduct and sell baby orangutans, who need their mother to survive. When the police can't stop the Slaughters, the Planeteers call Captain Planet to stop the Slaughters.

Hoggish Greedly is behind an attempt to get rid of the horses as well as Ma-Ti and his native American friend, but is stopped by Captain Planet.

This episode dealt with gang violence, guns, and the peace messages of Martin Luther King Jr., John F. Kennedy, and Mohandas Gandhi, as well as their assassinations. An old friend of Gi's, a teacher, is caught up in a gang war and nearly killed, so the Planeteers infiltrate the two feuding gangs and try to put a stop to the cycle of violence, which may prove easier said than done.

Note: In the first 10 minutes of the episode, Shaggy Rogers and Velma Dinkley from Scooby-Doo appear several times.

This exciting fifth series opener starts with a mystery. Animals are going blind. The Planeteers investigation leads to the depleting ozone layer and to Australia where a scientist is studying how to adapt to the harmful UV rays rather than work to reverse the damage. To make matters worse, the scientist is studying none other than Duke Nukem, who decides to turn up the heat when the Planeteers threaten to put an end to his sweet deal only for Captain Planet to cool his jets.

The Planeteers meet Dr. Blight's do-goody sister Bambi Blight who will be starring in an environmentally friendly movie. Unfortunately, Dr. Blight plans to ruin it. She binds and gags her sister and takes her place. However Bambi is able to escape and stop her sister's plan to destroy Captain Planet.

Note: This episode features a little inside joke in the scene where Dr. Blight, posing as her sister, tries to wreck the film. Because Dr. Blight's acting is so bad, the scriptwriter tells the director that they'll get Kath Soucie to loop her voice later. Linka agrees with the idea, saying "I hope they get that Soucie person." Kath Soucie provided the voice for Linka as well as that of Bambi Blight.

Featuring the voice of Arnold Stang as the Assistant Director

Hoggish Greedly inherits his grandfather Don Porkaloin's estate. But when he gets a hotel, he uses the cover as a legal operation but is stopped by Captain Planet. The groundskeeper Boaris is revealed to be Greedly's grandfather in disguise. After finding out what his grandson intends to do , Porkaloin (who is revealed to be one of the world's top environmentalists) is disgusted and instead gives the estate to Captain Planet and the Planeteers.

Dr. Blight kidnaps wealthy philanthropist Ella Salvador with the intention of preventing the implementation of a new smog reducing railway system in overcrowded Latin American cities (the city depicted resembles Santiago, Chile, specifically). Only Captain Planet can stop Dr. Blight.

Special Guest Star: Rita Moreno as Ella Salvador

The Planeteers split up to stop 2 plots involving rhinoceros horns: Looten Plunder and Argos Bleak distributing them and the Slaughter Family poaching rhinos for their horns. Upon learning that they have the same goal in rhino horns, Looten and Argos bust out Mame and Stalker to set up a trap for the Planeteers.

Special Guest Star: Tristan Rogers as Caucasian Patrol Member

Hoggish Greedly starts a war between workers in a town. The Planeteers call Captain Planet, who puts an end to the feud when he captures Greedly.

Special Guest Star: David Ackroyd and Ken Howard

Dr. Blight makes Gaia mortal and leaves Captain Planet and the Planeteers powerless.

Special Guest Stars: Héctor Elizondo and Brenda Vaccaro

A vine designed by nature to control the rate of erosion is altered by Dr. Blight using a stolen growth enhancement ray which she stole from Dr. Georgina Carbor. When the vine mutates into a plant monster when placed in Dr. Blight's eco-system, it's up to Captain Planet to stop it.

Special Guest Star: Cree Summer as Dr. Georgina Carbor

Zarm makes a bet with Gi after she claims that children are not born with hate, placing two neighboring children in a computer simulation where they can shape the world via thought, along with the shrunken Planeteers, threatening to expose the children to a traffic accident if Gi loses. Zarm allows the kids' feuding parents to influence them, causing the children to turn on each other, but the Planeteers and Captain Planet show them the error of their ways.

Last appearance of Zarm.

Sly Sludge shrinks the Planeteers and sends them to a dump. There, they build a plane, but the shrinking ray is wearing off, and the Planeteers call Captain Planet, who saves the Planeteers, and closes down Sludge's operations.

Trivia: By the time Sludge's operations closed down once and for all, he redeemed himself along with Ooze as his long-time sidekick.

Last appearances of Sly Sludge and Ooze.

It's Wheeler's birthday and a trip to Coney Island is delayed due to an eco-emergency. So instead they go to an Eco Park. Wheeler, who is tired, falls asleep in the tunnel of love with Linka. He dreams that he is a father with 8 kids and one on the way. Hope Island is destroyed by over consumption, but the other Planeteers and Captain Planet don't care anymore.

Vermanous Skumm steals a sacred artifact from a cave, but it is returned to its rightful owners by Captain Planet and the Planeteers.

Dr. Blight, Duke Nukem, Verminous Skumm, and Hoggish Greedly hijack a national television network and fill it with their own pro-pollution propaganda, the Planeteers arrive to cut their transmission and schemes short, but things escalate when Duke Nukem insists on dropping a nuclear missile for the cameras.

Trivia: Duke Nukem may had been presumed deceased after Captain Planet froze him turning into rock.

Last appearances of Duke Nukem and Verminous Skumm.

Special Guest Stars: Ted Turner as Fred Lerner and Jonathan Winters as Eco the Clown

Note: When the Planeteers are going on stage, they wear costumes which are the same outfits that characters in The Flintstones wear.

Hoggish Greedly is behind a scheme to wipe out all the river dolphins in existence, but the Planeteers call Captain Planet, who stops Greedly.

The Planeteers have three days to prove to a judge that Looten Plunder is cutting down old growth forests. Wheeler falls into the river, and the Planeteers call Captain Planet, who rescues Wheeler. Later, our heroes lose the battle as Looten Plunder and the Pinshead Brothers cut down more growth forest.

This is a rare episode in which the Planeteers lose, and the eco-villain comes out on top.

Special Guest Star: Perry King as Ray

Dr. Blight steals frogs from their habitat, but are returned with encouragement from Captain Planet, who ties Blight up.

The Planeteers join the circus to rescue some abused animals after they were abducted by the Slaughters.

Special Guest Star: Paul Williams as Kujo.

The Planeteers attempt to prevent past and future versions of Doctor Blight from selling a nuclear bomb to a German dictator strongly implied to be Adolf Hitler. Doctor Blight is ultimately responsible for the Hiroshima bombings as the result of a paradox.

In the future, Hoggish Greedly, Looten Plunder, and Dr. Blight are older but not wiser. They also trapped their time period's versions of the Planeteers. With help from MAL, Dr. Blight's daughter Betsi Blight comes to the past to help the Planeteers stop Dr. Blight from winning the US Presidency.

Special Guest Star: Melissa Manchester as Jane Green.

The Planeteers travel to India. All of them get sick except for Wheeler, who decides to investigate the sickness in the city with the help of an Indian woman named Lita.

After saving a rich man's life in a boat storm, Señor Cisneros treats the Planeteers to a stay at his luxurious hotel. When a hotel policeman mistakes Ma-Ti as a local riffraff, Ma-Ti decides to clear his head and visit the poor community. He meets up with a boy who can't read and is threatened by a gang who burns his parents' store.

The Planeteers are trapped in a terrible blizzard while journeying up Mount Everest. They are led by a wisecracking snow leopard named 'Heather' into an ice cavern where they think they will be safe. But, as it turns out, the cavern is actually a courtroom, and the Planeteers (as well as the rest of humanity) are judged for committed crimes against their fellow species. The Planeteers are all taken back to the times when the species were either hunted or had their homes devastated, resulting in endangerment or worse, extinction.

Featuring the voice of Tony Jay as the talking yeti that judges humanity.

The Planeteers head South to meet their pal Milton who plans to show them all he's doing to preserve the endangered Mississippi River. But Wheeler and Ma-ti don't want a guided tour; they have delusions of experiencing the Mississippi like Huck Finn and Tom Sawyer did in the old days.

Special Guest Star: Earl Holliman as Milton.

Looten Plunder and Hoggish Greedly try to destroy the African wetlands with their mining and cattle business, but are stopped by Captain Planet and the Planeteers.

Last appearance of Looten Plunder.

Hoggish Greedly is behind a scheme to get rid of the manatees, but the Planeteers call Captain Planet, who defeats Greedly and saves the manatees.

Special Guest Star: Fred Schneider as Danny Dazzleduff.

Dr. Blight is running a puppy mill selling sick animals.

When Lord Boxman and the Eco Villainess Dr. Blight are trashing the Plaza with pollutants, Planeteer Kwame (the only member of the Planeteers who is still active in environmental work) swings in and recruits K.O., Rad, Enid and the quarreling team of Brandon and A Real Magic Skeleton to wield the elemental rings and take back the ecosystem!

• Special Guests: LeVar Burton as Kwame and David Coburn as Captain Planet
• Notes: The events of the crossover specials take place after the final episode of the series.