mary sue definition
See Mary-Sue. A female fanfiction character who is so perfect as to be annoying. The male equivlalent is the Marty-Stu. Often abbreviated to Sue. A Mary Sue character is usually written by a beginning author. Often, the Mary Sue is a self-insert with a few improvements (ex. better body, more popular, etc). The Mary Sue character is almost always beautiful, smart, etc... In short, she is the perfect girl.