Nickelodeon All-Star Brawl's debut trailer showed beloved cartoon characters like SpongeBob, the Teenage Mutant Ninja Turtles, Reptar, and Danny Phantom all duking it out in developer Ludosity's Super Smash Bros.-like, but a piece of leaked cover art seems to imply even more characters are on the horizon, including Korra from Avatar: The Last Airbender sequel series The Legend of Korra.

Cover art for Nickelodeon All-Star Brawl that appeared on Target's website, and has since been removed, clearly shows a silhouette for Korra, as well as additional, yet-to-be announced characters like CatDog, Ren, Stimpy, and, possibly, Aang. Confirmed characters like SpongeBob's Patrick Star, Oblina from Aaahh!!! Real Monsters, and others also appear on the leaked cover art.

The artwork was first spotted by Twitter user El Blitzy (via Kotaku). Target has since replaced the cover art with a now silhouette-less version that only includes the game's logo.