Ninja Pizza is a pizzeria in New York City. As implied by its name, it is ninja themed, and appears in the issue "Heroes in a Half-Shell! Part 1" of the TMNT Adventures comics.
The turtles and April eat at the pizzeria, which has connection to Shredder, using surveillance cameras to watch from inside the Technodrome. Shredder then sends his Foot robots to kidnap April.
April with the Turtles inside Ninja Pizza.