Dorugamon

Dorugamon is a digivolved form of Dorumon. This heavy-weight class, ferocious Digimon has the disposition of a beast and a dragon. Many Digimon run away when just seeing its shadow. Where battle is concerned, he displays a ferocious nature like that of a wild beast, but he also the intelligence of a dragon, so he is usually very docile. Since he has an old-style interface on his forehead, it is guessed that he is the digivolution of a prototype dragon.

Digimon Chronicle
Dorugamon is the intial champion form of Dorumon, Kouta's partner.

Digimon World DS
Dorugamon digivolves from Dorumon, and can digivolve further into DoruGreymon depending on its stats, which is a hard digivolution without a Fire Road or Dragon EXP item.

Digimon World Dawn/Dusk
Dorugamon digivolves from Dorumon, and can digivolve to DoruGreymon and may be found at Login Mountain.

Attacks Variations / Subspecies
 * Power Metal: He fires metal orbs from his mouth.
 * Cannon Ball: Fires iron balls while dashing.
 * DexDorugamon