Hmmmm... I'd have to say Ix's lovely spellcasting 
Zelgadis, which I've had designs on ever since I 
first saw it.  *drool drool covet covet*

http://www.kamidake.com/slay/zelcel3.html

Actually, I covet one of Defiant's cels even more, 
but at least I have some hope of trading for it.  
Zel, there, I fear is forever beyond my grasp.  :)