Suzanne "Crazy Eyes" Warren (Uzo Aduba)
Backstory: Poor Suzanne: She's the adopted child of two middle-class white parents, and her quirks weren't totally embraced by her parents. It's unclear (for now) what landed her behind bars, but we know that the lady with the wild peepers has a violent streak — she beats up Poussey on Vee's orders, and knocks out Piper at the end of Season One. (Not to mention the whole peeing-on-the-floor-of-Piper's-bunk thing.)
Place in Litchfield's hierarchy: Though her erratic behavior makes her a bit of an outcast, Crazy Eyes is mostly accepted by the other inmates; when Vee is in charge, Suzanne becomes her Number Two.
Pre-OITNB: An accomplished opera singer ("I do all right," she says), Aduba starred on Broadway in Coram Boy in 2007, and also appeared in the ensemble of Godspell right before getting cast on Orange.
Best line: A tie between "I am not crazy. I am unique," and "I threw my pie for you!"