First appearing in "Captain Marvel Adventures" #22 (1943) as a disembodied voice, and later in issue #26 in his actual form, Mister Mind - "The World's Wickedest Worm" - is an evil alien caterpillar with genius intellect. Given his small stature, he wears a talkbox to communicate and is often depicted wearing eyeglasses as well. He runs the supervillain team called he Monster Society of Evil, whose membership includes most of the Marvel Family's key and recurring villains, including characters such as Doctor Sivana, King Kull, the Crocodile-Men, Captain Nazi, Mister Atom, Ibac, Jeepers, and Oggar. Mister Mind's own powers have included mind control (typically by crawling into a host's ear), telepathy, mental projection, and, once evolved into a "Hyperfly", the ability to eat time itself.