|Greymon (2010 anime)|
|Debut||Digimon Xros Wars (manga),|
"Xrosroad!! The Boys' Paths Cross" 
|DigiFuse forms||DigiFuse Chart|
Fusion Fighters United Army
|Voice actors||(Ja:) Takeshi Kusao (Xros Wars)|
(En:) Kyle Hebert (Fusion)
|Cards||(Ja:) Re-10, D1-13, D1-14, D2-20, D2-21, DC-04, D1-CP4, DP-04|
(En:) S2-019, S2-020, B1-017, B1-018, B1-019, B2-026, B2-027
Greymon (2010 anime) is a Dinosaur Digimon. It is a Tyrannosaurus-type Digimon. As a Digimon specializing in offensive power, its combat instinct is extremely high, and it possesses a cruel, brutal nature to not stop battling until it annihilates the opponent, so ordinary Digimon are not even able to approach it, as they are pushed back by the strange fighting spirit it gives off to its surroundings. It displays its especially tremendous fighting strength along with its sturdy flesh in close combat. Each of its techniques possesses immense destructive power, and furthermore, it can probably be said that it is almost impossible to hit Greymon in close combat because of its quick movements. Because it has a merciless personality whether or not one is a member of the same family, there is nothing but difficulty in using Greymon.
- Mega Flame: Attacks with a high-temperature jet of flames that burns its surroundings to cinders.
- Atomic Tail (Blaster Tail): Drives its tail into opponents for 360° around itself.
- Horn Strike: Assaults the opponent with a technique effective for both approach and retreat.
- Storm Horn
Greymon (2010 anime) is a Ceratosaurus-like Digimon whose design carries elements of the classic monster Gomora but holds itself in a more realistic, bestial position. Its helmet has cranial spikes like a GeoGreymon, and it has similar bony protrusions on its knees. Its skin is blue with orange stripes, the opposite of the original Greymon, and its tail is tipped with a bayoneted gunmuzzle.
- Greymon (2010 anime) (グレイモン（2010アニメ版）)
Official romanization given by the Digimon Reference Book and used in the franchise. Some media leave out the "(2010 anime)".
- (En:) Grey, meaning "old" or "ancient".
- 2010 anime, referencing the Japanese airdate of Digimon Fusion.
Digimon Xros Wars (manga)
Digimon Fusion Fighters
Digimon Story: Super Xros Wars Blue and Red
Greymon DigiFuses from Greymon L, Mekanorimon, and MasterTyrannomon, and can DigiFuse to MetalGreymon (2010 anime) with MailBirdramon, to GreyKnightsmon with MailBirdramon, SkullKnightmon, and Axemon, and to Shoutmon X3GM with Shoutmon, Ballistamon, Dorulumon, and MailBirdramon.
Wild Greymon are found in Digital Space N and S.