Johnny the Homicidal Maniac, known as Nny for short, is a supporting protagonist of Invader Zim: Born Again Christian. He is "onna Gods spesal solders" who is looking to fight the Antichrist.
He first appears to save Gloria Deschanel from the Teen Ragers. He compliments Gloria, and the two discuss the possibility of a date. However, they decide that first, Nny should christen Zim. He does, and they go on a date to the "Red Lubster".
There, they first encounter Simon Cowbell. He is openly fighting the restaurant's staff, and Nny thus sprays him with hot water and stabs him with a knife.
Later on, he forms a temporary alliance with the Teen Ragers, as he knows that Dib is desperately trying to join them, and is after Dib. This, later on, turns out to be because Dib is the Antichrist.
He appears again in Chapter 7, as the "apocelces" is starting. He knows that Dib is the Antichrist, and begins throwing knifes at the transformed Teen Ragers and falmer trollz. He performs an emergency c-section on Skepness Man.
Not much is known of Nny's fate, other than that both he and Gloria survived.
- Invader Zim: Born Again Christian (First appearance)