Box Office Bomb: Budget €27.8 million (about $33 million). Global box office gross: a little over $4 million.
California Doubling: Parts of the movie were filmed in Budapest in addition to Prague, due to the rival productionAnthropoid taking up much of the desired historical locations. While the climax of Anthropoid was filmed in the actual place in Prague where the events happened, the Orthodox cathedral Ss. Cyril and Methodius, the climax of The Man with the Iron Heart has been filmed in a different church, and a Catholic one at that.
Australia, UK and USA: The Man with the Iron Heart
Canada: Killing Heydrich
Czech Republic: Death's Head
Germany: The Power of Evil
Greece: The Target
Serbia: A Man Without a Heart
Taiwan: Villain Chase
Dueling Works: Came out less than a year after Anthropoid, which is about the exact same central historical event (Heydrich's assassination). The Man with the Iron Heart is based on a Historical Fiction book (which was itself based on the events) and gives a heavy, biopic-worth focus on Heydrich's life, whereas Anthropoid is more directly based on the historical events and focuses entirely on the Czechoslovak commando with no German protagonist. Heydrich only shows up for the assassination attempt scene in Anthropoid. It's even because of the production of Anthropoid that many scenes of The Man with the Iron Heart had to be shot in Budapest instead of Prague. Interestingly, it's an odd repeat of a similar duel in 1943, between Hangmen Also Die! and Hitler's Madman.
Fake Nationality: The German and Czech characters are played by British, Australian and American actors.
Meaningful Release Date: The film came out in early June 2017 in France, 75 years after the death of Heydrich.