Bartosz Tiedemann

Bartosz is one of the Winden teenagers orbiting Jonas Kahnwald, a normal kid dating Martha Nielsen and doing a little small-time dealing on the side. He's watchful and a bit insecure, aware that Martha and Jonas share a history he can't compete with, and eager to prove he belongs in this tight, ordinary-seeming friend group before anything strange begins.

Paul Lux plays the mundane stuff—teenage jealousy, wounded pride, wanting to be someone's first choice—so convincingly that Bartosz becomes the show's anchor to ordinary adolescence just as everything around him turns cosmic and impossible. His small, human wants make the town's unraveling feel like it's happening to real people, not just puzzle pieces.”