He also made many guest appearances in films and on television shows such as Diff'rent Strokes, Corky Romano, Bachelor Father, The Munsters Today, One Day at a Time,Dragnet (both 1954 and 1989 versions), Burke's Law, The Bronx Zoo, Mister Roberts, Babylon 5: Thirdspace, Barney Miller, Mister Ed, The Bill Cosby Show, My Living Doll, The Beverly Hillbillies, Ben Casey, Mannix, The Rifleman, America 2-Night, Reno 911!, 12 O'Clock High, More Than Friends, Small Wonder, Breast Men, The Fall Guy, Burke's Law, Cagney and Lacey, The Partridge Family and The Jeffersons. He also wrote the teleplay for an episode of The Betty Hutton Show.
King was probably best known for voicing Tailor Smurf in the 1980s television cartoon series The Smurfs. Long associated with Hanna-Barbera, King provided the voice of Shecky in The Biskitts (1983). He was also in the voice casts of The Little Rascals, Scooby-Doo and Scrappy-Doo (both 1982), Tom & Jerry Kids (1990), Droopy, Master Detective and the Flintstones TV special I Yabba-Dabba Do! (both 1993).
