Cindy "Black Cindy" Hayes (Adrienne C. Moore)
Backstory: Black Cindy is the TSA agent from hell: During her brief time working for the government agency, she harrasses travelers and steals from their luggage. She also has a history with drugs (possibly the reason for her imprisonment), and has an adolescent daughter who is being raised by Cindy's mother.
Place in Litchfield's hierarchy: Cindy is a go-with-the-flow sort of gal, but mostly hangs out with Taystee, Poussey, and the other black inmates. When Vee takes charge, Cindy rolls with it, but becomes a bit of a jerk — offering cigarettes in exchange for a clean bunk — in the process.
Pre-OITNB: If you recognize Moore, it's likely from her appearance on an episode of 30 Rock as Shanice, the marriage bureau worker who helps Liz Lemon on her wedding day.
Best line: "If grateful paid the bills, we'd all be Bill Gates."