Watch: Celebrity Deaths: 2025's Fallen StarsHollywood is mourning the loss of an unforgettable star. Malcolm-Jamal Warner-the actor who rose to prominence with his role as Theodore Huxtable on The Cosby Show, kickstarting a decades-long career in the industry-has died at the age of 54 after an accidental drowning, according to multiple outlets. He was 54. E! News has reached out to Warner's reps for additional comment. After landing his breakout role on The Cosby Show in 1984, the New Jersey native earned an Emmy nomination for Outstanding Supporting Actor in a Comedy Series in 1986.