Approval of God: Albert Uderzo was apprehensive of the use of CGI for his characters, fearing it wouldn't be as expressive as traditional animation, but when he saw the work of animation directors Louis Clichy (who once worked at Pixar) and Patrick Delage, he was delighted, especially regarding Obelix's design.
Bad Export for You: Had an incredibly limited theatrical run in the UK, only lasting about a week, and very few cinemas carried the 3D version.
Enforced Method Acting: Alexandre Astier had the French voices recorded before the animation work was done so the voice actors would come up with more originality in the roles and not be influenced by their characters' moves and attitudes.
Role Reprise: Compared to previous Asterix animated films, most of the voice actors are new. However, Roger Carel, who had been voicing Asterix since 1967, came out of retirement just for this movie (he hadn't done any voice acting since 2010). Nobody had to beg him for it, though — he volunteered himself.