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.
Character that insist is evil but clearly isn’t: Crowley from Supernatural.
But I think that character that is actually evil but still charming is more interesting, and for that I bring forward Baal from Stargate.
Crowly as in Good Omens?
No, from Supernatural. I don’t remember Crowley from Good Omens claiming to be bad
Different character, but there is a lot of overlap. When the show introduced Crowley for the first time, I thought it was an omage to Good Omens.
RIP the actor that played Ba’al.
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Maybe I’m confusing the two, but I always thought Crowley from Supernatural was an evil demon with a streak of humanity. His character arc is a redemption arc as he develops that tiny sliver of humanity