User blog comment:WaffleMinifigure/Waffle's Guide to Mary Sues and How To Prevent Them/@comment-7890302-20130710195416

I'll try this out.

I have worries that Goar might be a sue, but he is dumb, and is not Invincible. He is strong because his parents put him through hell, and such, he will be like Goku.

Strong at first, then be seen as weak by stronger characters, catches up, and then becomes weak again.