The mutant Colonel (as disambiguated from the Merman Colonel) is a frog-like sewer mutant with six eyes and a very long, prehensile tongue which he used to catch Leela when she was thrown from the surface into the sewer in "The Mutants Are Revolting."  He apparently has some measure of authority in the sewers, and commands other mutants in their march on the surface.

Picture 1

Mouth Mutant, Bender and the Colenol share a laugh and a drink.

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