 While battling Alcyoneus (who is invincible within Alaska), Frank taps into his ancestral power and transforms into an elephant.However, his combined power of being a son of Mars "and" having the ability to shapeshift makes his life very fragile.The Fates tied his life force to a piece of firewood when he was a baby, so if the wood burns up, he will die (as in the ancient Greek legend of Meleager).