The Bijuumon are a group of Mythical Animal Digimon whose name and design are derived from the mythological Bijuu (尾獣, bijū). They are differentiated by the number of tails they have, ranging from one to nine.
Currently, there only 3 known members.
Kyubimon is a Mythical Animal Digimon whose name and design are derived from the mythological Nine-tailed fox (九尾の狐 Kyūbi no Kitsune?). Despite being a Champion level Digimon, she is the leader of the Bijuumon.
- Dragon Wheel: She starts to spin very fast, which causes the flames on her body to erupt into a fiery inferno. This turns her body into a ball of swirling blue fire. When in this state, she summons a mystical dragon, which emerges from her body to destroy her enemies.
- Fox Tail Inferno: The blue flames on her tails become brighter, and ghostly faces appear on them. The faces then become small fireballs which she launches at her opponents to destroy them in an explosion of energy as well as trap them in a cage of blue flames which singes them.
Orochimon is a Demon Dragon Digimon whose name and design are derived from the mythological Yamata no Orochi (八岐の大蛇, lit. "8-branched giant snake"). It is gigantic and possesses eight heads, though seven of them are dummies, and the black one in the middle is the only real one.
- Inferno Blast: Gets the opponent completely drunk by intoxicating them with its alcohol-laden breath.
- Ame no Murakumo: Makes the tip of its tail become as sharp as a sword, then cuts apart the opponent.
Persiamon is an Animal Digimon that represents the Two-Tailed Cat (ニ尾, Nibi). She loves to be showy and has a sly personality, and her specialty is using her charmingly sparkling eyes and the jewels worn all over its body to bewitch the opponent, allowing her to pull their strings as it desires. Generally, if one becomes the victim of Persiamon's glamour, they are completely eviscerated. Although she excels in nimbleness with her lithel movements, she is also powerful despite her appearance, and the claws on both of her hands are sharp enough to cut through solid rock.
- Helter Skelter:: Beguiles the opponent with the bewitching charms of its belly dance.
- Vampire Wave: Gets close to the opponent while dancing, then sucks out all the blood in their body, down to the last drop.