This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Kid Quantum" – news · newspapers · books · scholar · JSTOR (July 2024) (Learn how and when to remove this message)

Kid Quantum
The Jazmin Cullen incarnation of Kid Quantum as depicted in The Legion #15 (February 2003). Art by Kevin Walker (penciller), Andy Lanning and Simon Coleby (inkers), and Jason Wright (colorist).
Publication information
Publisher	DC Comics
First appearance	(James) Legion of Super-Heroes vol. 4 #33 (September 1992) (Jazmin) Legion of Super-Heroes vol. 4 #82 (July 1996)
Created by	Tom Bierbaum Mary Bierbaum David A. Williams
In-story information
Alter ego	Protean James Cullen Jazmin Cullen
Species	Xanthuan
Place of origin	Xanthu (31st century)
Team affiliations	(All) Legion of Super-Heroes (James, Jazmin) Amazers
Abilities	(Protean) Shape-shifting Telepathy (deactivated as "James Cullen") Ability to create stasis fields (James) Ability to create stasis fields (externally augmented) (Jazmin) Ability to create stasis fields

Kid Quantum is the name of three fictional superheroes that appear in comic books published by DC Comics, primarily as members of the Legion of Super-Heroes.

James Cullen, the first Kid Quantum, was a member of the Legion who used a special belt to augment his powers. He was later killed in action, leading to a ban against members whose superhuman abilities were solely technological. It was later revealed that Cullen had gone into hiding, with a group of Proteans assuming his identity. The second Kid Quantum was also named James Cullen, but was an actual person rather than a constructed identity.

The second Kid Quantum was James' sister Jazmin Cullen, who underwent surgery to augment her power and no longer have to use the belt. Despite initial hostility from the Legion's members, she was eventually elected leader of the team and later entered a relationship with Cosmic Boy.

An alternate universe incarnation of James Cullen / Kid Quantum appears in Countdown: Arena as one of several variants of Monarch who were killed by him.

In Final Crisis: Legion of 3 Worlds, Jazmin returns from limbo to fight the Legion of Super-Villains.

Both incarnations of Kid Quantum can create force fields in a limited radius, within which they can manipulate the flow of time.

• The James Cullen incarnation of Kid Quantum makes a non-speaking cameo appearance in the Superman: The Animated Series episode "New Kids in Town".
• The Jazmin Cullen incarnation of Kid Quantum makes a non-speaking cameo appearance in Legion of Super-Heroes (2023).
• The James and Jazmin Cullen incarnations of Kid Quantum appear as character summons in Scribblenauts Unmasked: A DC Comics Adventure.^[1]

• A Hero History of Kid Quantum