Orochimon

Orochimon is a Demon Dragon Digimon whose name and design are derived from the mythical Orochi (『大蛇』). Orochimon is an ancient Digimon that used to rampage across the Digital World, until it was sealed by an "existence" that harmonized the area so that Orochimon couldn't annihilate it. Seven of Orochimon's eight heads are expendable, but the black head is not.

Digimon Tamers
Another digimon mega version was terrible digimon and destroyed by susanoomon.

Attacks
 * Ame no Murakumo : Uses his tail-tip to slash the enemy like a blade.
 * Sake Breath (酒ブレス)
 * Infernal Blast: Shoots a huge wave of fire from the center head's mouth.