That’s part murloc, part…diablo? Most likely. It’s a fire-breathing Murloc, and you can get this little vanity pet for World of Warcraft if you either attend BlizzCon in person, or order the DirectTV virtual ticket. He apparently goes around breathing fire at various character when you have him out. Perhaps you’ll want to sic him on your enemies, like that Troll that looked at you wrong the other day.
There will also be a special (as yet undetermined) StarCraft II gift that will be attached to your Battle.net account, so if you have any inclination of watching the goings-on at BlizzCon this year (October 21, 22), you might want to check that out, as you’ll receive some nifty goodness for your various game accounts.