Kiki is a gorilla with a Slappy Squirrel-like personality. She is the subject in only one episode, Kiki's Kitten, where the researchers were trying to find a way to make her less violent, but then Rita appeared, and she calmed down because she treated Rita like her own child. She is a parody of Koko the gorilla.

She was voiced by Frank Welker, but really didn't say anything.

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