David Kross

Character: Sam (Boy 7)

Emilia Schüle

Character: Lara (Girl 8)

Buddy Ogün

Character: Plattfuß (Boy 55)

Ben Münchow

Character: Louis (Boy 6)

Jens Harzer

Character: Isaak

Nina Petri

Character: Richterin Lang

Liv Lisa Fries

Character: Safira

David Berton

Character: Boy 35

Jörg Hartmann

Character: Direktor Fredersen

Anna von Haebler

Character: Luna

Christian Hockenbrink

Character: Arzt Institut

Ceci Chuh

Character: Carla

Karin Johnson

Character: Tante Maya

Ole Schloßhauer

Character: Klassenlehrer

Daniel Schütter

Character: Bedienung Doris Diner

Sibylle Scharr-Machefer

Character: Narrator (voice)

Martina Burkat-Paul

Character: Narrator (voice)

Nikita Vasilchenko

Character: Neu-Talent #46 (uncredited)