Kenan Thompson honored former All That castmate Christy Knowings on Thursday, August 13, 2026, after Knowings died at 46 following a severe asthma attack. A family member announced Knowings’ death on Facebook, while TMZ reported that she had been on life support since the attack the previous Friday. Thompson shared his reaction on Facebook, remembering Knowings as both a longtime colleague and one of the funniest people he knew. The tribute carried the unmistakable weight of losing someone from the era that helped launch Thompson’s career. Kenan Thompson Remembers His Nickelodeon Years “Rest well Christy!!! Never could have imagined this day!!” Thompson wrote, while sending love to Knowings’ family and asking followers to show her support. Thompson and Knowings worked together on Nickelodeon’s sketch comedy series All That , where Knowings joined the cast in 1997. Knowings appeared for three seasons alongside Thompson, Kel Mitchell, Danny Tamberelli, Nick Cannon, Amanda Bynes, Angelique Bates, Mark Saul and Josh Server. For viewers who grew up on ’90s Nickelodeon, Knowings’ passing marks the loss of another familiar face from a formative piece of pop culture.