As a teenager, Del Arco became interested in acting and the theater. He often traveled by commuter train from his home in Port Chester, New York to Manhattan, where he attended plays. He eventually enrolled in acting classes there, and after graduating from high school, he moved to New York City permanently.[2][3] Shortly after, Del Arco won a role in the touring company of Torch Song Trilogy.
Del Arco has appeared in a wide range of live theatrical plays. His New York theater debut came in 1987 in Milcha Sanchez-Scott's Roosters at the INTAR Theatre. Theater critic Mel Gussow called his a "most sensitive performance", and said his debut was "auspicious".[6] His Broadway theater debut followed in 1988, when he understudied and then played Martin in Michael Weller's play Spoils of War at the Music Box Theatre, replacing Christopher Collet.[7] This was followed in 1990 by an off-Broadway role in John Jesurun's Everything That Rises Must Converge at the Kitchen Theatre Company.[8]
His breakout role came in 2003 when he landed a recurring guest star role FX Networks's series Nip/Tuck, playing a transgender woman named Sofia Lopez. Roles on other highly rated shows such as 24, The Sopranos, and Dollhouse followed.[2] Beginning in 2007, Del Arco had a recurring role on TNT cable network's The Closer as the openly gay medical examiner, Dr. Morales.[13] He continued the role as a series regular in the series' spin-off, Major Crimes.
In addition to acting, Del Arco is a political, environmental, and gay rights activist. Del Arco turned to waiting tables in 1995 for an income. Instead, through a friend, he found paid work on an environmental campaign being led by actor/director Rob Reiner.[14][1] Del Arco then worked on numerous political campaigns.[14] Del Arco credits the political activism with allowing him to find a new passion and expansiveness as an actor, which led to new acting roles.[2]
Del Arco volunteered for Barack Obama and has worked for five presidential campaigns,[15] including as a celebrity surrogate for President Obama in 2012, Hillary Clinton in 2016, and the Biden/Harris campaign in 2020. Most recently, he has volunteered as surrogate for Jon Ossoff and Raphael Warnock for their campaigns in the 2020 Georgia Senate runoff elections.
He works to raise awareness for the Gay, Lesbian and Straight Education Network (GLSEN), which Del Arco described as life-changing.[13][16] "Never did I imagine that working for a nonprofit organization would have such a great effect on me personally. It's changed the structure of how I use my career as an actor because now I have a reason beyond entertainment to promote something other than me."[2]
In 2013, Del Arco was awarded the 2013 Visibility Award from the Human Rights Campaign and now works with the campaign as a guest speaker.
Del Arco was born in Uruguay. When he was 10 years old his family left their home for the United States, moving into a two-bedroom, "rat-infested" apartment in Port Chester, New York.[17][1]
When Del Arco was age 24 and living in New York City, he lost his first partner, Eddie, to AIDS. Later, when preparing the role of Hugh for Star Trek, Del Arco based the character's "innocence" and "wonder" upon Eddie, and channelled his own grief into the part: "I had just lost my partner a year before, so I was broken and lost and lonely, and I was willing to share that."[18][1][2][14]
Del Arco subsequently met Kyle Fritz, a talent manager, a year and a half after moving to Hollywood. They began a relationship around the time Del Arco appeared in the Star Trek: The Next Generation episode "I, Borg", and later married.[1]
One of Del Arco's best friends is Jeri Ryan, who like Del Arco played a Borg character in the Star Trek franchise; when Ryan returned to her role in 2020, Del Arco rehearsed with her to help her prepare.[19]
^Allison, Whitney (November 1, 2012). "Love at First Contact: Sex, Race, and Colonial Fantasy in Star Trek: First Contact". In Ginn, Sherry; Cornelius, Michael G. (eds.). Sex Is Out of This World: Essays on the Carnal Side of Science Fiction. Critical Explorations in Science Fiction and Fantasy. Vol. 36. Jefferson, North Carolina: McFarland & Company. p. 84. ISBN9781476600864.