The entertainment world is in shock and mourning the sudden loss of Malcolm-Jamal Warner, the actor best known for playing Theo Huxtable on the iconic The Cosby Show.

Warner, 54, tragically drowned while swimming during a family vacation in Costa Rica, a source confirmed to PEOPLE. The news has left fans and colleagues alike grappling with sadness and disbelief.

View this post on Instagram

A post shared by The Cosby Show (@the_cosby_show_fanpage_)

Warner’s portrayal of Heathcliff Huxtable’s only son on The Cosby Show from 1984 to 1992 made him a household name and an important figure in television history. In a 2023 interview with PEOPLE, Warner reflected on the lasting impact of the show, saying, “I know I can speak for all the cast when I say The Cosby Show is something that we are all still very proud of.”

He went on to describe the unique bond shared by the cast, forged through their experience on a show that helped shape both Black culture and American culture.

He did not shy away from acknowledging the complicated legacy of the show following the serious allegations and legal battles surrounding Bill Cosby.

“Regardless of how some people may feel about the show now, I’m still proud of the legacy and having been a part of such an iconic show that had such a profound impact,” Warner said.

After The Cosby Show, Warner’s career continued to flourish. From 1996 to 2000, he starred alongside Eddie Griffin in the sitcom Malcolm & Eddie, showcasing his comedic chops and charm.

View this post on Instagram

A post shared by Edward Griff (@eddiegriffin)

He later took on the role of Alex Reed in Reed Between the Lines from 2011 to 2015, acting alongside Tracee Ellis Ross. More recently, he appeared in popular series such as Major Crimes (as Chuck Cooper), Suits (as Julius Rowe), and The Resident (as AJ Austin). His recent TV credits include appearances on 9-1-1 and Alert: Missing Persons Unit.

Beyond his acting career, Warner was deeply invested in mental health advocacy within the Black community. He co-launched the podcast Not All Hood, designed to break down barriers and open up conversations around mental health, a topic often stigmatized in many communities.

View this post on Instagram

A post shared by Tracee Ellis Ross (@traceeellisross)

Fans worldwide are expressing their grief and celebrating the life of a man who was more than just an actor. For many, Warner was a comforting and relatable figure who used his platform to bring awareness to important issues while delivering memorable performances. Social media has been flooded with tributes and memories from fans who grew up watching him and were inspired by his openness and authenticity.

Photo Credit: @the_cosby_show_fanpage_ on Instagram.