Greninja (Japanese: ゲッコウガGX GekkougaGX) is a Water-type Stage 2 Pokémon-GX card. It is one of the SM Black Star Promos.
This card was released as one of the SM Black Star Promos, available in the Detective Pikachu Greninja-GX Case File and Detective Pikachu Greninja-GX Special Case File. A Jumbo version was also included in both collections. In Japan, it was included in the Great Detective Pikachu subset.
Mist Slash is an attack that first appeared on Greninja from XY. Dark Mist's Japanese name is that of Shadow Mist, a move in Pokémon XD: Gale of Darkness that Greninja cannot learn.