The Cosby Show's Malcolm-Jamal Warner 'dead aged 54' According to sources, Malcolm-Jamal Warner, best known for his role as Theodore Huxtable on The Cosby Show, has died aged 54 from an apparent accidental drowning. 21 July 2025 Malcolm-Jamal Warner, best known for his role as Theodore Huxtable on The Cosby Show, has reportedly died aged 54.