Okay so I found this quiz, and it tells you where or not your characters are marry sues or not. Its great. Really helps you think about little things about your characters that could use some work. So if you want to know if your character is a marry sue or not just go to this site. [link]
Brought to you by bran muffins, who wants um? Seriously I've got like a billion of these things... Okay not really I just wanted to add it.