Dragomon

Dragomon is a Sea Animal Digimon whose name is derived from the mythological and whose design is derived from the fictional  and the mythological. It is an evil god Digimon called the "Depraved Monk of the Deep" (Sinful Priest of the Ocean Floor). It is thought to have evolved from a computer virus that would infect the computers aboard ships and the like, then knock their direction and course out of order. It bundles up its innumerable, multiplying tentacles, and takes on a humanoid appearance, but its natural shape is a strange evolution of a Mollusk Digimon. For its defeated opponents, it wears a rosary around its neck, and adopts a pose similar to mourning. The DigiCode on its trident reads Dejitaru Monsuta (デジタルモンスタ).

Digimon Adventure 02
Dragomon is the rarely seen "Dark Undersea Master" of the Dark Ocean, served by the Scubamon who worship him. Though the Scubamon were enslaved by the Digimon Emperor and attempted to take Kari Kamiya upon her releasing them, they decided to return to their master. After Kari and T.K. Takaishi left for their world, Dragomon's shadowed form emerges from the Dark Ocean.

Digimon World 2
Dragomon digivolves from Octomon, and can digivolve further into Pukumon.

Digimon World 3
Dragomon can be found in Amaterasu's Seabed towards West Sector.

Digimon World DS
Dragomon digivolves from Sukamon. Dragomon also appears while at Training Peak, he is however destroyed by Cyberdramon's Erase Claw (who appeared just in time with his Tamer Yuji), these events take place after Calumon asks you to find him a Digi-Cake. Dragomon is sometimes found in the Drain Tunnel.

Digimon World Dawn/Dusk
Dragomon can digivolve to Neptunmon. Dragomon can be found in Macro Sea. Also, by DNA Digivolving Octomon & Gesomon (with both at minimum of 3 criterias: Lv. 33, Dark Exp. 3800 & Spirit 200) we can form a Dragomon. To degenerate to Dragomon, Neptunmon must be at least LV 38 with 4100 dark exp, but only if you have befriended Dragomon.

Attacks
 * Forbidden Trident: Throws its trident with tremendous physical strength.
 * Tentacle Flapping (無数の触手)
 * Thousand Whip
 * Tentacle Claw