I'd say dear ol' Magatha Grimtotem, of World of Warcraft fame (or infamy, after Cataclysm).
Basically, she's the chieftain of the "evil" (that is, motivated) tauren-tribe, and does a few, at least by Warcraft-standards, impressive schemes to secure her own power. Now, Blizzard have more or less made the tauren a group of inept, grass-munching pacifist, so it was fairly interesting to see at least one of them be at least a bit ambitious about her goals in life and with some will to actually do something whenever enemies are causing trouble.
http://www.wowpedia.org/images/8/89/Magatha_Comic.jpg
"How about I slap your shit, calf?!"
Goblin loggers ruining everything? Sneak in some poisoned gas into their camp! Assassination attempt? Hire an impressionable adventurer to blindly sort it all out for you in exchange for shinies!
Buuuut then again, it's Blizzard storytelling. So post-Cata, she's just an evil old witch leading an evil tribe of evilness... *Sigh*...