eter's sister Karen comes over for Thanksgiving, while Stewie goes a little too far as he and Brian go on a cleanse to avoid overeating.
Seth MacFarlane Peter Griffin / Brian Griffin / Stewie Griffin / Glenn Quagmire / Tom Tucker / God / Kool-Aid Guy (voice)
Alex Borstein Lois Griffin (voice)
Mila Kunis Meg Griffin (voice)
Seth Green Chris Griffin (voice)