Shadow Pikmin

Shadow Pikmin are a type of Pikmin found in Pikmin: Civil War that cannot be controlled. They are black with glowing red eyes and seem to be made a gas-like substance rather than a physical being. Shadow Pikmin are commanded by the Shadow Queen who has turned Pikmin against each other and is attempting to kill all other Pikmin colors. They are able to possess rogue Pikmin and Bulbmin and ravage enemies with their claws. The only way to defeat Shadow Pikmin is to use elemental power-ups as no physical attack will work.

Pikmin: Shadow Planet
In Pikmin: Shadow Planet, Shadow Pikmin are completely black, even their leaf/bud/flower. Only their eyes are a different color, grey. They will attack your Pikmin when either you are attacked by them or your Pikmin are turned into them. They, along with some other evil Pikmin types, are commanded by Shadow Olimar.