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.
Is he a veteran of the Emu War? Most soldiers are not considered evil for murdering the other side.
No, he just shot an emu in cold blood to advance the plot a bit quicker.
https://www.youtube.com/watch?v=DkHYcLM_KIo