I think some areas that could use a little improvement would be:
Maybe give an example of his eccentricities, especially the spoken one. Eccentric covers a lot.
Having a picture is good, but I forgot to mention the need to still describe the appearance. Even little stuff helps.
I think his history could probably use another event or two. It feels kind of barebones and glossed over. Some stuff that might help is maybe detail one of the bully moments (like the worst one that made him reclusive, or one of the ways his parents have tried to help him be social. It just adds a lot to build off of as a GM, and ways to connect as a player.