can anyone please tell me?

According to the commercial he's the prince of darkness but from what I've just read on the web he does actually play the game but I have no idea who his character is. Some players like their anonymity.

If you mean the character from the advertisement, then its an Undead Warlock who looks to be wearing Tier 8 equipment. But I don't think its publicly disclosed as to what his "real" character name/id is - though a lot of sources claim that hes apparently an avid WoW player. Sorry it didn't answer your question directly, but I hope it helped at least.

He doesn't that was an advert to get gullible people such as yourself to sign up.

I agree with Joe.