Firstly, love this idea.
My picks are Aladdin, Sage Dunban, Morgan Lafey, Fionn MacCumhail, Hipployta, Talos, Saint George, Jesus (if we can get away with it), Horus, Leonidas, Gilgamesh, Perun, Coyote, Pan, and maybe some shakespeare characters like Puck, Caliban, Prospero and the Scottish...