He also starred on 'I'm Dickens, He's Fenster' and 'Camp Runamuck' and wrote for nearly four dozen shows, from 'Hey, Landlord' and 'M*A*S*H' to 'MacGyver' and 'Full House.'

Ketchum played Agent 13 on 'Get Smart' and, in addition to his career as an actor, wrote for numerous television shows

Voice actor and comedian David Ketchum, best known for his role as Agent 13 on the 1960s television series Get Smart, has died. According to Variety, the actor died on August 10, 2025. Ketchum, who was 97, is survived by his wife, singer Louise Bryant, their two daughters, three grandchildren, and a great-grandchild.