Background: Hardened Criminal
The reasons you had for committing them might have been just, but there's no doubt you're guilty of your crimes. Even if you've been imprisoned only recently, your time behind bars has already taught you a brutal truth: if you're going to survive long enough to see your sentence through, you'll have to command the respect of your captors and fellow inmates alike.
Choose two attribute boosts. One must be to Constitution or Charisma, and one is a free attribute boost.
You're trained in the Intimidation skill and the Prison Lore skill. Your formidable demeanor makes people want to stay on your good side (or at least stay out of your way) rather than challenge you. Creatures you successfully Coerce don't become Unfriendly after doing what you want, so long as those creatures weren't already unfriendly or Hostile to you and provided your commands don't leave them with no choice but to become unfriendly or worse, as determined by the GM.