Negative Numbuh 1 is the counterpart of Nigel Uno a.k.a. Numbuh 1 of Codename: Kids Next Door. As Nigel's opposite, Negative 1 is shy, weak-willed, and easily manipulated, unlike the bold, strong-willed leader that Numbuh 1 is. Most of the time, Negative Numbuh 1 lets himself be bossed around by his ex-girlfriend Eizzil Enived; it was she who convinced him to help her capture Numbuh 1 after she already captured Lizzie.
- Since Eizzil's name is backwards for Lizzie, than its apparent that Negative 1's name is Legin Onu.
- However Eizzel once called Numbuh 1 "Positive Nigie". Suggesting thats his name in this reality.