|“||A simple reason really. I'M EVIL!||„|
|~ Negative Numbuh 4|
Negative Numbuh 4 is the main antagonist in the episode "Operation P.O.O.L." of Codename: Kids Next Door.
He is the supreme leader of the Destructively Nefarious Kids (D.N.K.), an evil version of the Kids Next Door Organization that exists in a parallel Negative Universe, and the tyrannical ruler of that universe before his defeat. When the main characters entered the Negative Universe through a portal in Numbuh 4's new backyard pool and Negative Numbuh 4 discovered the existence of a positive universe, he sent Eizzil Enived to capture her counterpart Lizzie in a bid to take over the positive universe.
Negative Numbuh 86 made a weak protest, only to be harshy rebuffed by Negative 4. Nigel mocked Negative Numbuh 4 and declared that they will never fight each other and rule alongside someone who rules by using fear, so Negative Numbuh 4 orders his guards to take the prisoners to the broccoli mines.
However, he was also an utter coward.