The Blimp

From Muppet Wiki

The Blimp is a mutant superhero who appears in Episode 24 of Statler and Waldorf: From the Balcony. The character auditioned for X-Men III, and was rejected. He has the power to slow down his metabolism. He is constantly hungry and will eat almost anything, including the Defroster.

In Episode 33, he appeared in a Maltese Falcon parody as Caspar von Blimpman.

The puppet was recycled from Big Head, and also used for an opera singer on Sesame Street.