In this crudely animated series, a mouse performs odd jobs so he can buy more beer. from adult swimDo not be fooled! 12 Oz Mouse is a chronology series that follows Mouse Fitzgerald, an alcoholic 12 Oz Mouse who has amnesia and a "crime personality", as he ventures through a dysfunctional, broken, and crudely animated world with dark and mysterious secrets linked to his past. Nothing is what it seems.