Deltamon

Deltamon is a Composition Digimon whose name is derived "", a Greek letter shaped like a triangle, and whose design is derived from the fictional. It was fused from three Digimon. and although each of them had existed as separate Digimon, due to a computer running wild after it was struck by a storm's electromagnetic waves, they were forced to fuse by a. It is said that since this Digimon, which possesses three heads and two tails, specializes in tripartite attacks that capitalize on its body's traits, it is even able to fight against three Digimon as if they were one. However, because each of them was a fiendish Digimon, they are only of one mind on destruction, and are usually on bad terms with no spirit of cooperation.

Digimon Adventure 02
In the 's "Death Valley" (Forbidden Valley of No Return in dub) where the latest Control Spire is, the sand sucks in Yolei Inoue,, Cody Hida, , Takeru "T.K." Takaishi, , Kari Kamiya, and , leaving Davis Motomiya and untouched. When encountering the Digimon Emperor, Davis's friends are suspended from the ground over a Deltamon who is under the control of the Digimon Emperor's Dark Ring. When the Digimon Emperor asks Davis which of his friends he will spare from Deltamon's triple appetite, Davis offers himself in their place, despite the Emperor's mocking reply that he will not satisfy Deltamon's hunger. Suddenly, appears with the others. The ones who were suspended are revealed to be Bakemon in disguise. Davis, angered by the Digimon Emperor's ploy, armor digivolves Veemon to. After the Digimon Emperor is attacked by Davis, he orders Deltamon to destroy him. However, Flamedramon intervenes and destroys Deltamon's Dark Ring before any damage could be done.

Digimon Adventure V-Tamer 01
DarkTyrannomon and Deltamon are followers of and guard the entrance to the valley where the first V-Tamer Tag is. Taichi Yagami and Zeromaru are able to bring them down.

Digimon World 2
Deltamon digivolves from Gizamon, and can digivolve further into Megadramon or Gigadramon depending on its DP.

Digimon World 3
Deltamon can be found in Amaterasu Server's Tyranno Valley. It is also the first Digimon the Qing Long City Chief has. It is also available as a Brown Champion Card with 14/14. In the PAL version of the game, Deltamon can be found in Amaterasu's East Sector, in East Wire Forest.

Attacks
 * Triple Force (Triplex Force): Fuses and fires energy discharged from its three mouths.
 * Serpent Bite (Skull Fang): Lunges with the Digimon on its left arm.