Gulfmon

Gulfmon is a Demon Beast Digimon.

Gulfmon is built like a bestial winged centaur. He lurks within the deepest parts of the Dark Area but appears on the surface in order to destroy it. The mouth of his lower torso is said to be connected with an abyss in the Dark Area, and if inhaled, an opponent's DigiCore is smashed to pieces.

Digimon Tamers: Battle of Adventurers
Gulfmon is Mephistomon's larger and more powerful but less intelligent form. The Tamers' Champion Digimon are unable to scratch him, but Calumon's powers activate, digivolving them to Ultimate. As Gulfmon charges at them, they combine their powers into their "Trinity Force" attack, impaling and destroying Gulfmon.

Attacks
 * Dead Scream: Unleashes a deafening shriek killing anyone who listens to it.
 * Black Requiem: Using his second mouth he releases dark energy from the Dark Area.

Role in Ultima
In Ultima, Gulfmon is the upgraded form of Mephistomon, serving as a Demon Juggernaut in the Org's Army of Darkness.