YouTube sensation Lars Andersen of Denmark was hired to teach the cast archery. Lars Andersen is famous for creating a YouTube video where he demonstrates extraordinary archery skills, earning him the nickname 'Real-Life Legolas'. Most notably, Lars is able to hit incoming arrows in flight and shoot and hit 3 marks while performing a single jump from the ground. To increase his speed he uses an ancient technique that requires him to shoot with his draw and not cross the arrow on the bow like modern archers do. This technique is used by Robin in the film.

Robin receives a notice that he was being drafted for the Third Crusade.

The Crusades weren't numbered until AFTER they had taken place. And nobles were never "drafted". They were presented with the opportunity to join and they did so to fulfill their oath to God.

In South Africa the film was edited in theaters for a 13 rating (after the uncut version was classified 16). The film was later released on uncut on DVD with a 13 rating as the violence was deemed to have less impact outside of a theatrical context.

Featured in The Tonight Show Starring Jimmy Fallon: Jamie Foxx & Taron Egerton/Zoey Deutch/Mark Normand (2018)