Numbuh 12
Numbuh 12 

Real Name



Sector P 

Voice Actor



Active (formerly), To be decommissioned 


Operative (formerly), Traitor, Teen Ninja 

Cameo Appearances

Operation: M.A.U.R.I.C.E.

"I'm almost thirteen, I'm gonna be working for the teens sooner or later, so I figure why not sooner!" - Numbuh 12

Numbuh 12 was one of the operatives at Numbuh 86's slumber party in Operation: S.L.U.M.B.E.R..


When the Teen Ninjas attacked, she betrays the KND and gives the Kids Next Door Code Module to Cree, stating that she was almost thirteen and believed that she would have to start working for the teens sooner or later, thus making her the youngest person to work for the teens. Numbuh 86 claims that she was her "only real friend".

She also had a cameo in a flashback in Operation: M.A.U.R.I.C.E., appearing as a younger version of herself with pigtails rather than a ponytail.


  • Her codename may be a reference to her age, as she said she was almost 13.
  • Her voice was never shown in the credits.
  • She is one of the few operative to not be decommissioned.
  • She was possibly a spy from the beginning, as she revealed her intent and it was shown by her grin.