Mr. Birg

Mr.Birg is Mr. Big's doppelganger and former employee (a hat vendor). He appered in the episode "The Talented Mr. Birg". His main part in this episode was being Mr.Big's employee, though at the end of the episode in which WordGirl is trying to convince Mr. Birg that he should let Huggy scan his face ( see Who Wants To Get Rid Of WordGirl/The Talented Mr.Birg for further information on the episode), she tells him that Mr. Big will never treat him as an equal. Due to this, it would be highly likely that Mr.Birg quit his job working for Mr.Big.