• Writer: Stan Lee, Larry Lieber
• Artists: Don Heck, Steve Ditko, Jack Kirby, Paul Reinman, Dick Ayers
• Cover Artists: Jack Kirby & Steve Ditko

Featuring: The First Appearance of Groot! Before becoming a Guardian of the Galaxy, Groot was a terrifying monster from Planet X. Possessing a vocabulary larger than "I am Groot", Groot's Marvel Monster origins are revealed here!