Whatever Happened to Robot Jones?/The Fairly OddParents

Robot Jones as Timmy

Mom Unit and Dad Unit as Timmy's Parents

Numbuh 4 (from KND) as Cosmo

Numbuh 3 (from KND) as Wanda

Mandy (from The Grim Adventures of Billy & Mandy) as Vicky (both voiced by Grey DeLisle)

Mitch as A.J. (both are voiced by Gary LeRoi Gray)

Cubey as Chester