Think I did this for a 'toptens' style game (think LukeB did one too) two years ago but times have changed...
You can name past or present characters, just don't say they're past characters in case that's a spoiler
Mine...
1) Red
2) Black Cindy
3) Rosa
4) Big Boo (although Not So Big any more)
5) Poussey
6) Flaca
7) Frieda
8) Taystee
9) Caputo
10) Yoga Jones
a lot tougher than I thought considering I like basically everyone bar Pornstache, Pischatella, Humps, Vee, Maria Ruiz and Luschek
and the white pride lot obviously.