Yes, but I didn't want to at first! To be honest, when I developed the story and characters, I really wanted to play Caesar. I started writing the character as depressive, madly in love with Cleopatra, who has conquered the Chinese market while he has to settle with "only" being known in his European empire. Maybe I saw certain similarities with my own life. I found it funny to see things as a sort of sequel to Rock n' Roll, but talking it over with Gilles Lellouche (who was not yet lined up to play Obelix), we realized that playing on that chord again with Marion might seem a little bit stale. So I thought of Vincent Cassel, somebody I've wanted to work with for a long time. And I saw Caesar in him. It's nuts, he has the exact profile of the comic book Caesar. He has that feline aspect, the right age and aura for the part, and I thought it would work perfectly with Marion. In the end, given the scale of the project, not taking a role in the movie seemed like a good idea. Then came a bunch of meetings to discuss the cast and, of course, the characters of Asterix and Obelix. For the latter, someone had to step into the shoes of Gérard Depardieu, who had nailed the part from the very first movie. He is Obelix! And he did the first four films, while three actors (Christian Clavier, Clovis Cornillac and Édouard Baer) played Asterix. So we started going through the names of actors and, at one point, at Pathé, Jérôme Seydoux said to me, "I don't get it, Guillaume. Why not you? I mean, honestly, you're young, you've got energy to burn, you're the little guy with the short fuse who always wants to prove he's right. You're the perfect Asterix!"Everybody around the table started chiming in, saying it was a great idea, and I was thinking, "No way! How can I play the lead while directing a movie of this scale?"