First Appearance: Tales to Astonish #13 (1960) (click on the cover image for a larger view)
Occupation: Alleged monarch of Planet X
Height: 30 feet
Abilities: Can animate Earth trees to do his bidding • Absorbs nourishment from wooden objects
Notable Quote: "Fool--none can withstand the mighty Groot! You are doomed! You and your town shall perish!" (Tales to Astonish #13)
Political Affiliation: Green Party
Turn-Ons: Crowds of terrified humans running before him • Grandiose monologuing • Scrabble®
Turn-Offs: Idealistic young scientists who devise 11th hour solutions to defeat him • People confusing him with Gruto, Creature from Nowhere • Termites.