Black Ninjakoopa is one of the Koopa Bros. and wears a black Koopa shell, shoes, and a bandana. Like other Koopas, if he falls on his shell, he will be unable to move. Black is presumably one of the oldest of the Koopa Bros.
- Black Ninjakoopa has three brothers: Red Ninjakoopa, Green Ninjakoopa, and Yellow Ninjakoopa.
- Black Ninjakoopa, along with his brothers, works for Bowser.