He's a single spawn in a small room. Hits for a decent amount of damage (160s I think?), and ok hp's (around 15k I'd say). Loot? none yet, but I've only spent a day in PoM so far, and half of the time I was dying experimenting around.
Slowable and not very mr. Also noticed that when I summoned my pet in corner, once fight started, pet poofed, and I'm not a druid, so one hit could not have possibly killed it.