The opposite of angelic is demonic which is reserved for children who don't look quite as cute as Angelic kids or aren't as good at lying.
Mother two: "I don't know how to tell you this but I think he set fire to my cat."
Mother one: "Oh no my little angel wouldn't do that. Bobby did you set fire to her cat"
Bobby: "No mum"
Mother one: "See it must have been the neighbours child, he is so demonic."
guy: i know she is hot
girl: and good at soccer
guy: id so tap that.