That's a Raging Ogre.
The Big Bang Theory Season 7, Episode 5
The other OGRE says:
The Big Bang Theory Season 6, Episode 23
That is amazing.
He made me care about the OGRE.
The Big Bang Theory Season 6, Episode 23
moss-covered OGRE."
The Big Bang Theory Season 5, Episode 4
All right, Amy, there's one OGRE left.
Take him out.
The Big Bang Theory Season 6, Episode 23