Lucario
It is a fighter in Super Smash Bros. Brawl, and uses attacks like Aura Sphere, Force Palm, ExtremeSpeed, Double Team, and its final smash, Aura Storm. Lucario was confirmed to be a playable character in Super Smash Bros. Brawl due to a leak. After seeing their mistake they quickly fixed it. Lucario and Jigglypuff can no longer be seen but there are many YouTube videos which show proof of the leak, as well as screen shots.