Darkrai

Darkrai is a boss in the Game. He is fought along side Mewtwo. He attacks very similarly to Phantom from the first Kingdom Hearts game, along with these bonus attacks:
 * Blizzaga: Darkrai lets loose with a wide-spread, nearly unavoidable Blizzard attack.
 * Dark Void: He occasionally uses this attack. Puts the player into a deep slumber. As he is about to kill you, you must preform a button push prompt to wake up and counter his attack.