Night Ninja is one of the three antagonists of the animated tv show, PJ Masks. He's a mysterious villain who never actually gets involved in a battle as he summons his henchmen, The Ninjalinos, to do his dirty work for him. One time he assists Romeo by using his shrink machine to shrink everything in sight which is pratice for their real plan to shrink the PJ Masks.
He is voiced by Trek Buccino.
The Night Ninja wears a fully-covered navy blue ninja costume with nighttime-like stars on it.