Rizzo the Rat performer Steve Whitmire
Rizzo the Rat is a Muppet character from the sketch comedy television series The Muppet Show, created and originally performed by Steve Whitmire until 2016.
He is a fictional rat who appeared on The Muppet Show and numerous films, with a starring role in the 1992 film The Muppet Christmas Carol.
The character is particularly associated with Gonzo the Great, with the two sharing a double act since 1992. Whitmire based the character on Ratso Rizzo in Midnight Cowboy and performed him until 2016.