H.P., in politer terms, is a male Lion in an enormous pride of Lionesses. He gets what he wants (or who), when he wants.
He's had nearly every female Pixie in Pixie World. But, enough isn't enough for this brawny male. He's gone to the extent of leaving his own world, and even own universe to find new one-night-stand girlfriends, succeeding. He's most likely the father of over half of the the newest generation of baby Pixies.
He raised his son Anti-Cosmo and Sanderson alone. His ex-wife, Anti-Janice (Anti-Mama Cosma) left him after going insane and abusing him and their second-oldest son.
His best friend is the Ice King, who's from an entirely different universe.