Movie characters who completely changed over a franchise

I'll mention another big one: Michael Corleone in Godfather III compared to the first two films.

At the end of Part 2, Michael has his own brother killed, literally shuts the door on his wife and becomes estranged from his adopted brother. He's the total opposite of his father.

In 3, he's suddenly this emotional older man who cracks jokes at weddings, makes up with his wife and tells his nephew to make peace with rivals. I know people change in 20 years and sure he'd feel regret at his past mistakes, but not this much. Coppola should have showed us how Michael changed with a little of his old darkness intact. Remember Pacino in Carlito's Way? That's kinda the way I see an older Michael behaving.