Tepoz is also a prototype golem created by Mayahuel, the only known golem who has no memory of a prior human life (he suspects he was some small expendable animal when alive). When the Chimera was split into the three Golem Girls he was given the 'honor' of being their keeper.
For an unknown time he was dormant in the form of a small statue until Monica unintentionally reactivated him. It was Tepoz who brought the Golem Girls to Monica, although it took her a while to warm up to them. He's usually somewhere around the museum or Monica's house these days.
He's a primary cast member. His first appearance was on 11 Jan 2002.