I know I messed up on his body proportions, hopefully I'll do better next time, but overall I was mainly focused on his design.

Pazuzu changed his 'name' mainly because Gelos offered the name when he mused about changing it. Pazuzu, where the name comes from, is from a demon. Not a nice one, but one that still is called upon to protect others; mainly children and pregnant women. Pazuzu is a very protective Monster and has done things to protect his people, himself and Gelos that no one saw coming.

He has a few nicknames too; The Bloody Angel, Pazuzu the Demon and some others that give away too many spoilers.

Pazuzu is close friends with Gelos, both traveling and sticking together.