Bonewalkers are officially the most annoying creature alive or undead.
They curse you, drain your attributes, and most annoying of all, they pop up when you least expect them.
I personally like cliff racers, unless I have no weapons or spells.

I kick cliff racer tail, even at level one, which pure mage characters!
This is Zarrexaij, the Cliffracer Slayer and Hater of all Bonewalker Kind.