Orochi

Orochi is a character that was introduced in the Samurai Warriors and Dynasty Warriors cross-over game Warriors Orochi as the main antagonist, having caused the worlds to collide. He is based upon the snake demon yamato Orochi from japanese mythology and is a playable character once all other chracters are unlocked.

In Warriors Orochi 2 Orochi is revived and has a new look accompanied by a more powerful version of his original weapon from Warriors Orochi, (see Orochi X).

In Warriors Orochi 2's Orochi mode (a prequel to the events of the first game) his storyline is expanded upon more.

From what can be told by putting various pieces of the stories and character's conversations together, Orochi was imprisoned by the mystics for various crimes to humanity (presumably from his time as a snake demon.)

Da Ji interested in the chaos he could bring, frees him from his imprisonment and using his power Orochi forms a world to test his strength by pulling warriors from the Three Kingdoms Era of China and the Warring States Period of Japan.

He seems to desire someone to beat him however as hinted by various lines he speaks, Wei's ending in Warriors Orochi 2 and the Showdown at Yamatai Dream Mode level containing Lu Bu Keiji Maeda and Tadakatsu Honda