1. Someone suffering from a belief that there favorite character is a super cool badass
based of them just liking the character. The character in question can have no feats near what a person suffering from DFS says he can do.
Ex: A person suffering from DFS would think Krillin is the strongest fighter in DBZ and would be strong enough to
fight Perfect Cell and win with no
help.
2. Someone suffering from a belief of their favorite characters needing
extra care/exposure when they serve no real purpose to the overall story arc of the series they are in. They make up
random scenarios to put their characters in, but unlike fan fiction writers it is their own headcanon that they try to spread to everyone.