A mix of a jokester whose gags always fall flat but who has high energy. Obviously a vegetable, just look at the picture.

A cheerful jokester who seems somewhat human. Has no face, but has a face.

A jokester who might be an idiot straight-man, who knows. Has arms and legs but is a vegetable.

A junior who always meets with misfortune, or maybe just a straight-man who is actually sane. Has holes that it claims are its face.