Favourite characters that embody "You either die a villain or live long enough to see yourself become a hero"

I just think alot of great character I love start evil but grow into protagonist roles

Loki from Loki season 1 and 2

Vegeta

Piccolo (hell alot of dragon ball characters)

Hiei (yuyu hakusho)

Accelerator (toaru) Are ones off the top of my head but curious to hear any others