Culex is an optional hidden boss who appears in Super Mario RPG: Legend of the Seven Stars. Alongside the Crystals, Culex is an even more powerful boss than the main story's antagonist, Smithy. His alignment and motives differ drastically between the Japanese and English versions. Culex could be considered a crossover from Square's flagship Final Fantasy series, although the character has never appeared in a Final Fantasy game.
On September 23, 2016, it was discovered that purchased Nintendo eShop pre-load data was actually the full game of Paper Mario: Color Splash(pictured), granting players early access two weeks ahead of schedule in North America. Nintendo, however, removed the pre-order option within hours, and stated that this was inadvertent.