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Black Ninjakoopa is the second of the Koopa Bros. gang. He gets his name from the color of his shell and his ninja gear. He is the second oldest of the Koopa Bros. and the lieutenant of the gang. Black first appeared in Bowser's castle with the others. He said nothing and he standed on the left side beside Yellow Ninjakoopa and was behind Red Ninjakoopa. He next appeared in Toad Town disguised as a Black Toad. He talks in this one and was transformed back to his regular self by Merlen. He next appeared in Koopa Bros. Fortress. He was the first to be seen in the fortress. He guards the entrance but when he saw Mario, he ran to tell Red. He next appeared on the last floor firing a Bullet bill at Mario. He last appeared seeing Mario when entering Red's room. He was heard talking in Paper Bowser. He was defeated by Mario and friends and fell into his own prison cell with the others. He next appeared in Bowser's castle ready to fight Mario but was deafeated by Jr. Troopa.