User blog comment:StupidUsername123/Mary sue/@comment-24947676-20150804123042

Well, uh...

Try the Mary Sue Litmus Test. It'll help you find out if your character is a Mary Sue. Remember to read the instructions properly!

Only answer questions in Part 1, Part 3, and Part 5 for OCs. Answer Part 2 questions as well if you're testing canon characters. It's long, but it's worth it.