Klandicar, the weird face-paint dragon chilling at the entrance of Dragon Necropolis in Western Wastes. The lore was cool as heck, he had some awesome dialogue... Folks were just busy saying: "He's the guardian of dragon necropolis (<-- WRONGWRONGWRONGWRONG) who does this and that AE and has so many hp and so hard max hit and drops these phatz". No one apparently hailed him and asked him what he's gonna go kill himself for. (hoh, found his dialogue even:
http://www.thesafehouse.org/forums//...96&postcount=5)
And ogres in general, especially the city of Oggok. It's a huge sodding tavern!
If we're talking mob models, probably the brown lizardmen (ie. allizewsaur, later in revamped CT these were everywhere in the temple and they were THE BIG NASTIES). Probably because I had always just killed broodlings and scouts and junk that were colored green, so a brown one with black tattoos (or patterns, meh) was all new and neat.