|Prior forms||BlackAgumon (2006)|
GeoGreymon is a Dinosaur Digimon whose name and design are derived from "Geo Greymon". It is a unique member of the Greymon Species that is conjectured to be a subspecies of BlackGreymon. Its body and the carapace on its head have also developed like a full-length lethal weapon, and its appearance has become more aggressive.
- Mega Flame: Spews super-high temperature flames from its mouth, reducing everything to ashes.
- Mega Burst: Fires off a version of "Mega Flame" enhanced to its limit within its mouth.
- Horn Impulse: Charges with its gigantic horns and pulverizes the opponent.