From Bulbanews, your community Pokémon newspaper.
New variant Mewtwo appears in Pokkén Tournament
Following the revelation of footage showing off a dark variant of Mewtwo, a new trailer for Pokkén Tournament has been released which features the variant, revealing its name to be Shadow Mewtwo (ダークミュウツー Dark Mewtwo).
The new footage is mostly taken from the in-game cutscene that was discovered recently. This footage is placed at the end of a previously released trailer and branded as a new trailer for Pokkén Tournament. Shadow Mega Mewtwo X is not depicted in this trailer nor officially acknowledged.
Notably, both its English and Japanese names match those used by Shadow Pokémon from Pokémon Colosseum and Pokémon XD: Gale of Darkness.