S1E20 · Épisode 20

Bob McFadden

Milton the Monster (voice)

Dayton Allen

Fearless Fly / Professor Weirdo / Heebie / Jeebie (voice)

Herb Duncan

Count Kook / Muggy Doo / Two Feathers (voice)

Beverly Arnold

Penny Penguin / Flora Fly (voice) (uncredited)