I suggest you do a Google search. “Gary Stu” is even mentioned in the opening paragraph of the Wikipedia “Mary Sue” article.
Thank you for proving my point. The only time anyone every pulls out Gary Stu is to defend their use of Mary Sue.
In fact, watch what happens when you search Wikipedia for Gary Stu:
Mary Sue
From Wikipedia, the free encyclopedia
(Redirected from Gary Stu)Hahahaha.
Even Wikipedia gets it!