you can mindcontrol him, and as a pet he has a knockback/kick ability that dismounts.
he got this for the death knights apparently, if a newbie dk enters org on his way to thrall, he will boot you if he sees you, while screaming he will save us (or something to that effect.. i missed this legendary moment when i strolled into org with my death knight :'( ) and if you MC him, he retains this.
its very amusing running around the mailbox and AH abit, messing around and kicking random people, watching them LOL and confused
recommended 5 *'s
http://www.wowhead.com/?spell=58561 pride breaker, the spell he gained that we can use.