I was playing a hurthling mindcrafter and it just occurred to me how annoying it would be to have to face one of them. Just imagine a monster like that - confusion that's really hard to resist, and as soon as you're confused it pelts you with humanoid slaying arrows and greater telekinetic blast. If you get close, it teleports away .
This got me thinking what characters would do best in PvP. I really think mindcrafters would probably be one of the best, if not the best (just going by a typical character that closed the gate, not an archmage or anything). An archer might be good too since mine usually bookcast Web and Farsight, so if they see you first it's probably over. I don't think a wizard could get close enough to use Acid Ball and Magic Missile only travels in straight lines. Melee classes are definitely out because even if you use a wand and teleport next to the enemy he can just teleport away with his own wand. Unless you have a barbarian fast enough to get a double move and kill in one tremendous blow.
Actually maybe a bard would do well.. a bunch of extremely experienced killer bugs is hard to deal with.