Clavier later furthered his popularity by taking the role of Asterix in screen adaptations of the renowned comic books by Albert Uderzo and René Goscinny.

In 2023, President Emmanuel Macron saluted Clavier's work, stating: "You have been all the faces of the families of France, the infatuated son-in-law, the bewildered uncle, the pretentious cousin, the jealous husband, the cantankerous father.

After his high class studies at the Neuilly Lycée Pasteur—though asserted here and there, he never studied at Institut d'Études Politiques de Paris (Sciences Po) [2]—he started his actor career with the comedic theater troupe Splendid, which had hits with films like Les Bronzés font du ski and Le Père Noël est une ordure.

Succeeding the character's original voice actor, Roger Carel, it was his first role in an animated movie.

He was made Chevalier (Knight) of the Ordre national du Mérite on 13 June 1998,[3] and promoted Officier (Officer) in 2005.