Callisto Hime is the username of a fanfiction authoress on several sites, including Deviant ART and Fanfiction.Net. She took Fire Emblem (the Akaneia and Elibe series) and The Legend of Zelda and wrote two fairly popular fanfics enjoyed by Zelda fans and not so enjoyed by Fire Emblem Fans due to more or less rewriting or ignoring Fire Emblem canon due to only knowing about the series from Super Smash Bros.