Rastakhan's Rumble Guide
Grunting is what his father did and his father before that. It's more than just a job.
Quote from Midnightillu >>
This is the most unimpressive card in the game.
Annoy-o-Tron beats him, having at least 3 health and being a Mech
Sparring Partner is literally better in stats AND has a battlecry
Twilight Geomancer is the same thing as above
Even some other 2 drops are better as soft taunts, like Sorcerer's Apprentice, Knife Juggler and Flametongue Totem
In fact, why are you even reading this? You couldn't have gotten him from a pack, so you couldn't have remembered his existence, and your only reason to consider using this guy is if you are new and have nothing better to put than him. (or maybe extra Bolster targets o.o)
Regardless, a forgettable card. Asides from a meh drop from Piloted Shredder, or a very disappointing Unstable Portal, you'll be seeing this guy less and less the more you progress.
EDIT: Alas, poor Grunt, now even Pompous Thespian has been added to further your unpopularity.