Trivia

The Friesian king Redbad/Radboud portrayed in this film is not to be confused with the catholic Saint Radbod/Radboud, bishop of Utrecht as well as namesake of many catholic institutions (such as the hospital and university of the Dutch city of Nijmegen). Saint Radbod was probably named after his ancestor, king Redbad, but he was born more than a hundred years later.

An open casting call was distributed via newspapers and social media, calling for five thousand men with long hair and beards, to serve as extras during the battle scenes. A special request was made for 200 men who could bring their own horse, who would be receiving special stunt training. Reportedly, over ten thousand extras applied.

Most likely the biggest box office bomb in Dutch movie history, earning only 300,000 euros on an 8 million euro budget. The makers stated that in retrospect, the summer release was a bad decision, since the film had to compete with atypically good weather, as well as high-profile movies such as Incredibles 2 (2018) and Jurassic World: Fallen Kingdom (2018). They had also underestimated the popularity of the concurrent World Championship Soccer, wrongly assuming that ratings would be low since the Dutch soccer team had not qualified for participation. The lack of promotion and poor scheduling of cinema's are to blame as well.

The costumes worn by the Frankish soldiers are the same costumes used for the Frankish soldiers in the TV-series Vikings (2013). Redbad's costume had also been used in the show for the character jarl Borg.

Seven weeks after its release it was already moved to video on demand-platform Pathé Thuis. This was at the time the shortest window between a theatre release and home release for a big Dutch production, which normally takes a period of three months.