This NPC was named after a player who died, Blizzard made a NPC in his honor as during life the player used to love AV more can be found here about it.

http://www.wowwiki.com/Captain_Armando_Ossex

Hits for around 400-500 on cloth, has way more HP than shown (about 42,000) and doesn't have any special abilities. Immune to snares, roots, and CC in general I believe (was immune to Polymorph anyways) but can be disoriented from the Dragon's Breath effect and potentially other effects. Makes it hard for a clothie to do much against him (had to pop a potion and a healthstone to down him)

Didn't drop anything :(