Thog is a giant blue Muppet Monster on The Muppet Show. His size may make him imposing, but he has a sweet and gentle disposition. He is known for doing duets with some of the female guest stars in the show.
Thog also did an act with the late Harvey Korman in a Circus act.
At 9 1/2 feet tall, Thog is the largest full-bodied Muppet character in Muppet history, making him bigger than Sweetums (7 ft. tall), Big Bird (8.2 ft. tall) and his Spanish cousin Abelardo Montoya (7 ft. tall), Mr. Snuffleupagus (7 ft. tall and 12 ft. long) and Barkley.
- Jerry Nelson from The Great Santa Claus Switch (1970) to The Muppet Show (1980)
- Tyler Bunch in The Muppets (2011)
- Although still voiced by Jerry Nelson, Steve Whitmire performed in the Thog suit at least twice: in episodes 307 and 502.