Mona, 24, was a student at Rosewood High, ex-nerd who used to idolize Alison DiLaurentis. After Ali disappeared, Mona transformed herself to the "It Girl" along with her BFF Hanna Marin. She became 'A' (anon stalker texter with near omnipotence) and is later sent to Radley for psychological treatment, then let go. Can speak French, hack computers, do voice impressions. Mona is a genius, but also has a personality disorder. “A” manipulates, blackmails, tortures. “A” has a love for riddles +dolls.