Gammamon (ガンマモン) is a rookie, virus-type, ceratopsian Digimon. It's mostly white, with red-tipped frills, small black horns, and yellow eyes. It wears a blue scarf and a red band on its left arm.

Gammamon's evolution is said to be linked to a "digital signal that came from extragalactic space". The two hard horns that grow from its brow are weapons that are useful for offense and defense. It is also capable of levitating, and flying for a short period with the tiny wings on its back. It rarely shows its emotions, but it seems that once you reach out to it, it will gradually grow attached to you.

In Digimon Ghost Game, he is the partner/"brother" of Hiro Amanokawa. He is particularly fond of chocolate, which he calls "champion".

See also

• Fresh: Curimon
• In-Training: Gurimon
• Rookie: Gammamon
• Champion: BetelGammamon, KausGammamon, and WezenGammamon
• Champion (Dark Evolution): GulusGammamon
• Ultimate: Canoweissmon
• Mega: Siriusmon