Humongous Chicken is a giant, slow-witted chicken who pesters Elmo as he tries to get to Huxley's castle to retrieve his blanket and the quaternary antagonist of The Adventures of Elmo in Grouchland. He got sent by Huxley and Bill to defeat Elmo and mistakes Elmo for a worm. However, upon hearing Elmo sing "I'm a Little Teapot" to prove that he isn't a worm, the Humongous Chicken then thinks that Elmo is a teapot and declares that he can't have tea. He hasn't had his "din-din" yet and then tosses Elmo off the tree branch. He is defeated when Huxley looks out of the window.

The chicken is a normal-sized hand puppet, but is superimposed over the landscape to appear bigger. He is one of Dave Goelz's few Sesame characters.

Birdwalk Empire on the other hand is in a team of chickens to fight with the ducks on how they walk and what they're speeches are until that situation against these things have been handled by Agent Van Cuckoo to make them do it together and fairly.

A similar variation of the puppet has later been used on Sesame Street, such as for Super Chicken (with feminine eyelids). It has subsequently been used for multiple other characters on Sesamstrasse. The variant without the eyelids can also be found on Elmo the Musical and on The Furchester Hotel.

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