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)