Grandfather

Grandfather (voiced by Neil Ross) is the main antagonist of Codename: Kids Next Door: Operation Z.E.R.O. He's the father of Father, Nigel Uno's father, along with Numbuh 1's, & The Delightful Children's grandfather. His plan is to rule the world so that they can make bowl after bowl of Tapiyoca pudding just for him. The only one that was able to stop him was Numbuh 0, a long lost operative who became Nigel Uno's Father, the legendary Numbuh 0. He met his end after Numbuh 0, had them both inside the decommisoning chamber, wiping out their memories.