First seen ActionComics #263 (Apr 1960)
One of the great creations of the charming, inventive, perfectly crafted early ’60s Superman was Bizarro World (sometimes referred to as “Htrae”, which is “Earth” spelt backwards), where society operates by the strangest code: “Us do opposite of all Earthly things! Us hate beauty! Us love ugliness! Is big crime to make anything perfect on Bizarro World!” A cube-shaped planet, it’s populated by Bizarro versions of all the big Superman mythos characters. There’s an easily frightened Yellow Lantern with a useless ring, an Aquaman who can’t swim, a Joker who’s the only sane person there – and Bizarro No.1, a mirror-image, Frankenstein’s monster take on Superman, who’d first been introduced a couple of years earlier.