Nico Demo (lit. "Nick Demon") is a character from the comic book franchise Monica's Gang. Considered incorrect and opposite character to other characters of Monica's Gang stories always feature black humor and much sarcasm. Because of this his slips came to be canceled for many years.
Nico Demo is a boy who is always looking for some way to do good and help people, but in reality the back always doom and hurts in the end of the stories. Characterized as a "little devil" in the body of a boy whose hair reminds horns Nico Demo never does evil intentionally, but always manages to do it without ever taking punishment so. Nevertheless there are also cases in which he despises the poor condition of other people making jokes and offensive pranks.
He is a naughty boy who is never punished for his misdeeds.