Claim: Michael Maertens played Dr. Karl Brandt in Speer und Er, Arzt in Phoenix and Eckhard Badebrecht in Fack ju Göhte 3 which was directed by Bora Dagtekin.
Evidence: Dr. Karl Brandt Speer und Er Arzt Phoenix Eckhard Badebrecht Fack ju Göhte 3 Fack ju Göhte 3 (intentional misspelling of Fuck you, Goethe) is a 2017 German comedy directed by Bora Dagtekin and starring Elyas M'Barek and Jella Haase, while upcoming actors Max von der Groeben and Gizem Emre appear as supporting roles.