Her name was Glissinda the Troll.
The Big Bang Theory Season 4, Episode 4
Oh, my, this is one tough TROLL.
The Big Bang Theory Season 4, Episode 6
He's Glissinda the Troll.
The Big Bang Theory Season 4, Episode 4
Kill TROLL.
The Big Bang Theory Season 4, Episode 6
Troll master.
The Big Bang Theory Season 4, Episode 23