I'd say pretty much any cosplay should be doable. Video games of all sorts are quite welcome at Anime conventions and their corresponding events, since the vast majority of Anime fans are also gamers. At Sakuracon cosplay chess, I saw Deadpools, Solid Snakes (which the only thing Japanese about him is his creator), Dr. Seuss characters such as the Onceler, Jack Frosts, Marvel characters, etc. There was a huge diversity in character types.