39. Malcolm-Jamal Warner (Age 54)

Malcolm-Jamal Warner played Theo Huxtable onThe Cosby Showfrom age 13, becoming a beloved TV son to millions. He continued acting in shows likeMalcolm & EddieandThe Resident.
Malcolm tragically passed away at 54 in an accidental drowning while vacationing in Costa Rica. His long career and kind spirit left a lasting impression on generations of viewers.