Nintendo appears to have done an oopsie and revealed four as-yet-unannounced characters from the much-hyped Nickelodeon All-Star Brawl: Aang and Korra from Avatar: The Last Airbender, and Ren and Stimpy.

GameXplain spotted that Nintendo had the game up on the Switch's eShop with its full cover-art while the cover art as of now officially keeps several characters in silhouette.

Though it appears to have been a mistake on Nintendo's part (that they've since rectified), it isn't an earth-shattering one. The original silhouetted cover featured the relatively clear outlines of Korra, Ren and Stimpy, and while Aang is more difficult to spot, it makes sense that Korra would appear alongside Aang. This isn't exactly the infamous Grinch Smash leak.

The game, while lacking an official release date, is slated for Fall 2021.