Greymon X is a Dinosaur Digimon and carrier of the X-Antibody. Its cranial skin has hardened so that it is covered in a rhinoceros beetle-like shell. It is an extremely aggressive monster, with a body like a lethal weapon covered in sharp claws and gigantic horns, and it is most excellent among Dinosaur Digimon as a Combat Species. However, it is highly intelligent, and if you're able to tame it then there probably isn't any monster as strong. Due to the X-Antibody, it has further increased its aggression. Although its physique is relatively small among Dinosaurs, many of whom are larger Digimon, it amply exhibits the ferocity typical of a carnivorous dinosaur, and is winning battles to increase its own strength.
- Nova Blast (Mega Flame): Spews extremely high-temperature flames from its mouth and reduces everything to ashes.
- Mega Burst: Uses a technique possessing explosive power in which it enhances its "Mega Flame" within its mouth to its utmost limit.
- Great Antler
- Grey Tooth
Its design carries elements of the Ceratosaurus.
- Greymon X-Antibody (グレイモンＸ抗体)
- Greymon X
Digimon World Re:Digitize: Decode