Baal? oo diablo expack or sequel inc?
I was thinking this too, especially since it would then be otherworldly! I'm expecting news soon, actually soon not WoW soon, about Diablo.
The pet is definitely a Diablo reference... Baal is the Act V boss (aka final boss) of Diablo II: Lord of Destruction. Though to be honest, his Diablo model is decidedly... different from this pet.