Daniel Brühl as Alex

Katrin Sass as Mother

Chulpan Khamatova as Lara

Maria Simon as Ariane

Florian Lukas as Denis

Alexander Beyer as Rainer

Burghart Klaußner as Alex's Father

Michael Gwisdek as Klapprath

Christine Schorn as Ms. Schäfer

Jürgen Holtz as Mr. Ganske

Jochen Stern as Mr. Mehlert

Stefan Walz as "Sigmund Jähn"

Eberhard Kirchberg as Dr. Wagner

Hans-Uwe Bauer as Dr. Mewes

Nico Ledermueller as Alex (11 years)

Jelena Kratz as Ariane (13 years)

Laureen Hatscher as Baby Paula (1 year)

Felicitas Hatscher as Baby Paula (1 year)

Martin Brambach as Stasi 1

Michael Gerber as Stasi 2

Robert Störr as Official at Award Ceremony

Philipp Kupfer as Baby Paula (3 months)

Ernst-Georg Schwill as Taxi Driver

Rainer Werner as Stasi in Denim Jacket

Marc Bischoff as Young Ward Doctor

Horst-Dieter Stork as Border Guard 1

Hartmut Kuley as NVA-Officer

Peter Kurth as "X-TV" Boss

Ditmar Bieseke as Border Guard 2

Arndt Schwering-Sohnrey as Ambulance Driver

Dirk Prinz as Passenger

Jürgen Vogel as "The Chick"

Elke Werner as Saleswoman HO-Market

Regina Ziebach as Cucumber Woman

Wolfgang Stein as Cucumber Man

Mennan Yapo as Flea Market Vendor

Fritz Roth as Guard at Coca-Cola

Maximilian Brunow as Pioneer Sasha

Bojan Heyn as Pioneer Niko

Armin Dillenberger as Bank Teller

Denys Darahan as Pioneer Christian

Bastian Lang as Pioneer Frank

Lothar Schlichthar as Fat Man at the Pool

Alexander Reed as Wuppertaler

Ute Michel as Gynecologist

Svea Timander as Father's New Wife

Hanna Schwamborn as Carla

Rafael Hübner as Thomas

Michael Berge as Party Speaker