Kain?

Kain? is a character in Final Fantasy IV the After: Tsuki no Kikan. Throughout the game he is thought to be Kain Highwind, but is in fact his evil side. After the real Kain failed his mission upon Mount Ordeals, this evil form was created, and it sided with the Mysterious Maiden. Kain eventually fights and defeats it in Baron Castle, allowing himself to become whole once again. He then transforms into a Holy Dragoon.