May also refer to Alternate character.
Substitute
Greninja-Substitute.png
Greninja vanishes, its Substitute in place.
User Greninja
Universe Pokémon
Article on Bulbapedia Substitute (move)

Substitute is a move used by Greninja in Super Smash Bros. 4. Upon use, Greninja fades away and a Substitute goes in its place. This move appears to be the functionally similar to Double Team as a counterattack, but actually teleports Greninja behind an opponent that attacks with a projectile.

Origin

File:Substitute.png
Substitute in Generation I.

Substitute is a move in the Pokemon series since the first Generation. When used, the Pokémon loses 25% of its maximum HP from its current HP and leaves the screen, replaced by a doll; the substitute. The substitute shares the original Pokémon's stats and typing. When a substitute takes the amount of damage needed to defeat the original Pokémon, it fades away. If the Pokémon does not have enough HP to make the substitute, then the move will fail. It is considered a "Normal" type move and has 10 PP.