Hyperion is the one with the hots for the Titaness Thea and murders Crius for daring to disagree with him on the issue of world domination and the annihilation of all humankind
Other than that I'm sure he's a perfectly reasonably guy.
Our last view of him is as he thrusts his giant hand into shot as the virgin Connie Swayle..er... Gabrielle reads the last of the incantation and turns him back to stone -
Just be grateful he wasn't flipping the bird as she did it.
