Who are some people that started out as ghouls and made a turn for the better? Bonus points if it came suddenly and from their own realization.

I thought about this for a while and the ones I could come up with aren't really that good.

• Emperor Puyi.
• Jeffrey Sachs went from doing shock therapy to Russia to defending their right to defend against NATO expansionism on a lib news show, but that's been his only good moment to my knowledge.
• Jimmy Carter but he never changed course when he needed to, not much he can do to undo the harm he did as president.
• Patty Hearst but she really wasn't doing anything bad, just came from a wealthy and powerful family much like Puyi.
• Pat Tillman was deployed when he had a change of heart and contacted a bunch of reporters, sadly he was killed by another troop before he got to make much of a difference.
• Peter Daou but he's largely irrelevant
• That natsec ghoul that wrote the article about quitting her job because she doesn't want to be complicit in genocide.
• Whistleblowers like Chelsea Manning? I don't know off the top of my head how involved she ever was with the war on terror, but she was a troop.
• Malala and Greta were never ghouls, but did grow from lib media darlings to over time so honorable mention to both of them.

I guess the most obvious example that does satisfy my criteria is Kissinger, who really popped off when he died.

edit: You do not, in fact, have to hand it to Puyi before he was re-educated.