After failing to make a playable appearance in "Super Smash Bros. Brawl", Mewtwo returned to the series as a DLC character in "Super Smash Bros. for Nintendo 3DS" and "Wii U" on April 28, 2015, though it was made available to Club Nintendo members who registered both versions on April 15, 2015. In "3DS" and "Wii U", its Final Smash involves it Mega Evolving into Mega Mewtwo Y and using Psystrike, its signature move in the "Pokémon" games. A new form of Mewtwo, Shadow Mewtwo, appears as a boss character in "Pokkén Tournament" and has a special attack that involves it Mega Evolving into Mega Mewtwo X. In addition, its normal form appears as a playable character. Mewtwo returned as a playable character in "Super Smash Bros. Ultimate" for the Nintendo Switch, where it is once again an unlockable character.