strangestereotype
There's a terrible sickness in the world of writing, known to most as the Mary-Sue, or her equally terrible brother, Gary-Stu. These characters are perfect, wonderful, and have no flaws whatsoever, whether they be physical or mental. They're just so perfect, you want to throw up in your mouth.
Now, as most authors don't want their readers coughing down vomit, here is my personal guide on keeping the Mary-Sues and Gary-Stus at bay.