My favorite is Bog king from Strange Magic - Has a song talking about how evil he is. But all he does is prevent the spread of dangerous mind control magic, and quarantine people under the effects of said magic. Yes he greatly annoys people doing so, but honestly? If I get hit by a love potion, please quarantine me.
https://lotr.fandom.com/wiki/Fingolfin#Combat_with_Morgoth_and_death
Dude tooled up to the gates of Angband, challenged Morgoth to single combat, and left a mark.
He was a hero among elves and free men.