Marley is the poster child for all Mary Sues. She has less personality than Bella Swan. At least the others listed have inexcusable flaws and have been the villain in situations, unlike Marley.

Kurt has a really STRONG personality!
The other 4 have less personality apparently but Sam, Blaine & Marley have all a lot of flaws and good traits / believes so I vote for Ryder who is trying to make everyone think of him as the poor sweet little selfless cute guy. That's not personality, that's weakness!

actually a character is considered Mary Sue only for girls, guys are called Gary Sue i think but whatever, it must be the "hero", the one that is the prettiest, the most talented, the one that always saves the day who doesnt has any flaw (wich btw is a flaw) and that only leave us with one single character: MARLEY! i would've say Blaine is too (and actualy he's way more than her) but as i said before the poll is directed to girls not guys.

Kurt is not even a Gary Sue because he never gets his chance!! he doesnt saves the day and not everyone falls in love with him (that, once again, is Blaine!) Sam used to be on past seasons but not anymore, now hes more on Britt's style like the dump blond character. Then is Ryder must be on any sense but i dont think he is because 1 he never gets what he wants!! 2 sometimes he pushes himself to be the victim and everyone gives him the back and 3 he IS a cute guy, hes not mean as all the crazy/obsessed Jarley fans says BUT hes not the best guy ever on earth neither.

Mary Sue is the more general and well-known term. This poll is not directed towards girls, because Mary Sue initially and generally applies to any character, it's just that Mary Sue-ism is more common in females which is why it was given a girl name. I just didn't feel the need to toe "/Gary Stu" each time.