|Location(s)||Koopa Bros. Fortress|
|Weak Point(s)||Unknown edit|
Yellow Ninjakoopa is one of the Koopa Bros. and wears a yellow Koopa shell, shoes and a bandanna. Like normal Koopas, if he falls on the back of his shell, he won't be able to move for one turn. Yellow is probably as old as or younger than Black Ninjakoopa. He is probably the weakest but not the strongest.
- Yellow Ninjakoopa has four brothers: Red Ninjakoopa, Green Ninjakoopa, and Black Ninjakoopa, and Orange Ninjakoopa, who replaced him
- Yellow Ninjakoopa, along with his brothers, work for Bowser.