"De Superjhemp Retörns" is the first feature length film for director Felix Koch
This move had a production budget of 3 million Euros, which makes it the most expensive luxembourgish movie to date.
This movie contains over 245 animated VFX effects, the biggest amount of animated effects in any luxembourgish movie ever
This movie is based on the "De Superjhemp" comics, a luxembourgish superhero comic book series created by Lucien Czuga and Roger Leiner. The series sold more than 185.000 copies and is the most successful creation in luxembourgish literature to date.
Filming took place in Luxembourg at the Château de Septfontaines and in the old offices of the radio station RTL Luxembourg, that have since been demolished.