Fred Tatasciore

as Gluko / Kitty Num Nums (voice)

James Arnold Taylor

as Lennon (voice)

Dana Snyder

as Grandma (voice)

Roger L. Jackson

as Mr. Sprinkles (voice)

Alex Jayne Go

as Little Bubble (voice)

Brendon Small

as Pointy Thing (voice)

Artie Esposito

as Puppeteer (voice)

Anna Gamburg

as Little Bubble (voice)

Denise Gorzelanny

as Grandma (voice)

Achim Götz

as Gesang (voice)

Karlo Hackenberger

as Gluko (voice)

Henrik Ilgner

as Gesang (voice)

Matti Klemm

as Bubble Monster (voice)

Elias Kunze

as Bubble (voice)

Simon Kunze

as Bubble (voice)

Jan Makino

as Lennon (voice)