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.
I think you would really enjoy reading paradise lost. OK, maybe you wouldn’t enjoy reading it because it’s written in late 15th century iambic pentameter, and the anachronistic vocabulary makes it a bit of a slog— but it’s an incredible (apocryphal, but what about Satan isn’t?) story about how Lucifer became Satan.
Just make sure to get an annotated copy so you can understand what the hell is going on.