Cast and credits of Operation S.I.X.

Dee Bradley Baker
Numbuh 4 (voice)

Jeff Bennett
Mr. Fizz / Soda Patrol Member (voice)

Greg Cipes
Lieutenant Seltzer (voice)

Ben Diskin
Numbuh 1 / Numbuh 2 (voice)

Maurice LaMarche
Father (voice)

Charlie Schlatter
Numbuh 20,000 (voice)

Cree Summer
Numbuh 5 (voice)

Lauren Tom
Numbuh 3 (voice)

Hynden Walch
Rainbow Monkey Leader (voice)