jack is concept art, and i guess you could technically count him as official, he isn't a fan made character, he was designed by byron, just not his actual personality or character. judy and nick both got traits from him, as far as i understand, and nick was originally going to be jack, but things got changed obviously. gokhan's hatred is purely based of people drawing jack and judy together, or "nick bashing". but he takes it to such a crazy level, a lot of people have expressed dislike for the extent he takes it to, but it hasn't fully deterred him from making "jack hate" art. if it weren't for jack existing originally though, nick and judy would never exist, so you think that'd be something to consider... but eh.