Kismet the Toad is Kermit's impersonator in The Muppet Show Comic Book: The Treasure of Peg-Leg Wilson. He is one of many Kermit lookalikes hired by Kermit for an all-Kermit closing number. However, because Kismet turns out to be Kermit's only impersonator, the act is replaced with a new one.
Kismet steals Miss Piggy's jewels and replaces them with fakes, but after assaulting Dr. Bunsen Honeydew in the basement and recovering the treasure, Miss Piggy and a pig police officer catch him. He is asked about Piggy's jewels, which are very realistic fakes, and admits to his crimes. He is then arrested.