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.
He didn’t kill him he used the dehydration gun which turns people into cubes. He can be put into water and will be back like nothing happens. He even used that in the finale to defeat Tighten
If not for an accident where he ended up in a washing machine, he’d have been left as a cube indefinitely. From a cube’s perspective, there’s no difference between being a cube and being dead.