The fat not-beholder orb at the flesh market had an AC increasing every round, not sure what he was on. Most annoying thing was he was immune to crits.
Also I like the look of those horned Skeletor guards. What kind of demon are they supposed to be?
None of the origin characters are very appealing, tbh. Maybe I'd pick frog girl for a Chaotic Stupid playthrough, killing as many party members as possible.