A Baboon (the natural form of the baboon, as opposed to the rock baboon in the Basic Fantasy RPG Core Rules), is an aggressive primate adapted to life on the ground. It weighs between 60 and 90 pounds, and can be 2 to 4 feet tall. It lives in troops and often hunts small game. It will face down predators when the troop is threatened. A baboon does not normally present a threat to adventurers, but if cornered or threatened it will become hostile. A baboon usually prefers to attack in groups; single individuals suffer a -2 penalty to morale.

Communal and vegetarian, baboons will defend their territory if it is invaded. Determined resistance will result in flight, rather than facing extinction (90% chance of flight). If the whole tribe is encountered, half will not participate in combat, being immature.