David Kross

as Sam (Boy 7)

Emilia Schüle

as Lara (Girl 8)

Buddy Ogün

as Plattfuß (Boy 55)

Ben Münchow

as Louis (Boy 6)

Jens Harzer

as Isaak

Nina Petri

as Richterin Lang

Liv Lisa Fries

as Safira

David Berton

as Boy 35

Jörg Hartmann

as Direktor Fredersen

Anna von Haebler

as Luna

Christian Hockenbrink

as Arzt Institut

Ceci Chuh

as Carla

Karin Johnson

as Tante Maya

Ole Schloßhauer

as Klassenlehrer

Daniel Schütter

as Bedienung Doris Diner

Sibylle Scharr-Machefer

as Narrator (voice)

Martina Burkat-Paul

as Narrator (voice)

Nikita Vasilchenko

as Neu-Talent #46 (uncredited)