Given Avatar: The Last Airbender and The Legend of Korra are two of Nickelodeon's strongest IPs, transcending generations of fans, it was puzzling that Nickelodeon All-Star Brawl's reveal didn't lead with Aang and Korra on the initial roster. As the game isn't set to launch until the fall, it's possible developers are holding that announcement until closer to the release date in order to ramp up hype around the game. However, keen-eyed fans may have seen both avatars on Nickelodeon All-Star Braw...