Is he/she a late insert into an established mythos?
Does he/she already have the abilities of a paragon character?
Do his/her abilities exceed those in the wide field of the established mythos?
Do the established characters love him/her without reservation, even though they barely know them?
Do established characters fail at what they're normally good at so he/she can show how much better he/she is?
Is he/she young and beautiful?
Is her beauty in someway unique? (example; violet eyes with powder blue hair)
Does she have a tragic but noble back story with her parentage?