Jack of Blades

A powerful being, older than time itself. When gods and demons ruled over all, when man had not yet set foot on the earth, and creatures roamed that only your most terrible nightmares could begin to imagine, even then Jack was old. His mask is a soul shell, which explains how he has lived so long. His soul resides in it. The mask itself tempting foolish yet powerful heroes to wear it, thereby giving Jack a new body. His greatest accomplishment is bringing forth the Sword of Aeons form a dark void... Then getting his arse whooped by a Hero.

final boss on the game known as Fable