Equadeus Prison. The most vile prison on all Equadeus (it's the name of the planet), they have murderers, thieves, con artists, and the occasional psychos, they also have rapists and pedophiles, but they don't survive for too long, the wardens and inmates make sure of that.
Meet Sunset Shimmer, the prison's main warden, and her fellow wardens, Trixie Lulamoon, Hoofman and Jacob Keyes.

Then there are the two blackmailers, Leonard Church and Twilight Sparkle, both being murderers, their bodyguards, Michael Caboose and Applejack, respectively, at a cold war for information.
There are also the best thieves, Pinkamena Pie and Arthur Nax.

There are the incompetent (rarely a competent) guards. Do I need to mention the staff? The only good person that actually resembles a doctor is Sheila Fillys.

Disclaimer: Everything belongs to their parent company, I don't own anything except for this fanfic, my OCs and some of the places.