Among the numerous Pokémon discovered to date, Marshadow is the first to combine Fighting type and Ghost- type. Marshadow is able to conceal itself in the shadows, and it never appears before humans, so its very existence was previously thought to be a myth.
Marshadow can sink into the shadows of others and copy their moves and power. Fighting-type Pokémon are usually weak in battle against Psychic-type Pokémon, but with Marshadow, you’ll be able to take advantage of its Ghost-type abilities to battle effectively!
When standing up to enemies with its full power, parts of Marshadow’s body turn green, thanks to its burning fighting spirit.
Spectral Thief is a new move which only Marshadow can learn. This move steals any stat boosts that the target had and then deals an attack. It’s a powerful physical move with a surprising effect. Change a crisis into a chance, and victory may be within your reach!
Once Marshadow knows Spectral Thief, the special Z-Move Soul-Stealing 7-Star Strike can be used. Marshadow must also be holding the special Z-Crystal Marshadium Z, which cannot be obtained through regular gameplay, to perform this Z-Move.
More details, including how Trainers can get this Pokémon for their game, will be announced at a future time.
Source: The Pokémon Company International