Mary-Sue - The Ultimate Guide

Introduction - What is a Mary-Sue?

Mary-Sue.

Did you shiver at that word?
That's because you've encountered one yourself. Whether you have made one in the past, or have seen your fair share of them, you can't deny that these over-powered perfect fan characters are everywhere. There isn't one fandom that exists without one of these characters.
A Mary-Sue is a character created that was designed to be perfect at everything. These characters are generally female, so we'll use that for now. She is flawless in every way possible. Everything is her strength, she has multiple personalities, she is the centre Prophecy fulfiller of the fandom, and let's not forget that she HAS to have the most gorgeous and perfect looks that EVERY boy - including the antagonists - will fall for.
Oh, and the worst of all, their oh-so-TRAGIC backstory and how their lives suddenly become perfect when they meet the canon characters, and they become a Queen or a Goddess...

I am trying so hard not to burst into rage right now. It is taking every ounce of strength in me to control myself.
Why am I writing this again?
I'm writing this to show you all what you can do to prevent your own Mary-Sue characters, how to detect another, and what to do about them.

For these scenarios I present, I'm going to create a character from the back of my mind that is designed around each scenario.