The most legitimate or most dubious of all cosplay fandoms? ‘Tis a conundrum which is devilishly difficult to deduce an answer to. For a sub-genre that’s never had a bona-fide “even your mother knows it” hit, steampunk sports a deucedly large legion of dedicated followers.
Perhaps this is due to this same underground status. Fans can be as creative as they want without dressing like any particular character. And what razzes a fan’s berries more than their favourite games, books and movies being virtually unrecognized by the general public? Or the general public being unaware a film such as Wild Wild West is part of a larger subculture (though perhaps steampunkers would like to forget about that one too).