I think people are like onions, in that they have layers. The very deepest core is permanent and unchangeable. The layer next to the core is also extremely difficult to change and barely ever changes in any strong measureable way...when you get to the very outside layer, the most superficial, that changes drastically... one year a person is infatuated with the letter W and the next year they are certain that the ultimate letter in the universe is R.
If a person is labeled a "bad guy" here, some say "he can never change"... but truth remains... the person can or cannot change based on what level their "crime" sits upon... if it was a deep or core level, the possibility of change is nearly zero. If the "crime" came from a less-than-deep level, it is certainly possible for them to change....especially if the crime itself goes against the true nature of the core of the individual!
Case in point...
I did something once (when I was 18) that would have me labeled here on the BOI as a "Bad Guy" and boy, it was BAD (did not involve live animals)... I was going through some changes on some of those middle layers of my onion, and I made a bad decision. I can still remember with perfect clarity the day the person I injured called me up and called me on the issue. I think if I'd had a hole in my big toe, ever ounce of blood would have dropped out of my body. I felt awful, once I realized the extent of my crime. I had never felt more sick in my life... not for being caught, but that I had DONE such a thing. I immediately made reparations far and above the level of my crime. Not worth it to go into the crime, but let's say I scammed someone for $100, I made sure to make reparations more than five times the value of the injury, and made sure to undo the injury (it WAS possible). I felt awful. I didn't want to even REMEMBER my crime. I wanted to ERASE it, but in spite of the lengths I went to to make it better, the wound to my own soul remains... because I acted OUT of character with the person who I am at my deepest level.
Mr. ReallyBad with a core as rotten as anything, might try to make changes, his outer onion layers might scream "good guy" but eventually he'll revert to form, he'll do something that will have him labeled a "bad guy" and he will feel remorse ONLY if he's caught in his act, actually DOING the bad thing is not the source of his remorse.... and he will lash out and blame the accusers, especially whoever it is who has caught him in his bad act. Mr. ReallyBad can NEVER truly change... he might revert to his "acts of good" but they will always be an act and will never be condoned by the inner self.
I think that few (if ANY) of the "good guys" on the BOI have 100% pure cores. Heck they probably all have somewhere closer to 90% as 100% pureness probably doesn't exist.... but the things that matter and make them a "Good Guy" in this universe here are all good. And I think that few if any of the bad guys are 100% BAD .... but they have few good guy virtues that will bring them praise on this site.
People CAN change, but only if we're not talking about the deepest core inside.