There is no character named in the 1998 French film Les Visiteurs 2: Les Couloirs du Temps . It is likely you are thinking of the Persian King , portrayed by Rodrigo Santoro in the 2006 film .
The "story" you may be thinking of involves the chaotic time-traveling antics of Jacquouille
Xerxes’s role is critical because the film introduces a new conflict: Godefroy’s descendant in the present day, the clumsy dentist Jacques-Henri Jacquard (also Christian Clavier), has inadvertently altered the past. His daughter, Frénégonde, is the spitting image of Godefroy’s lost love, Béatrice. When Godefroy attempts to use the corridors, Xerxes reveals the horrifying truth: the timeline has been contaminated. If Godefroy does not repair the damage—specifically, by preventing a marriage that would create a paradox—the entire Montmirail bloodline will vanish like “dust in the wind.”
Directed by Jean-Marie Poiré and released in 1998, this sequel picks up exactly where the original 1993 film left off. Godefroy (Jean Reno) has returned to the 12th century, but his marriage to Frénégonde is halted because the family’s sacred jewels—specifically the —are missing. Watch The Visitors 2 (Les couloirs du temps - Amazon.com
While Xerxes doesn't have dialogue (thankfully, the film didn't go the Air Bud route), he is part of the visual fabric that made Les Visiteurs 2 a maximalist masterpiece of French comedy. He adds to the "organized noise" of the film—a movie known for having everyone talking at once, doors slamming, and magical portals opening in laundry rooms.
Franck Dubosc, bien avant son Camping ou son statut de roi du box-office, campait ici un complètement déconstruit. Loin du tyran cruel et majestueux joué par Rodrigo Santoro dans 300 , le Xerxes de Les Visiteurs 2 est un personnage de vaudeville pur sucre.
Aujourd’hui, Les Visiteurs 2 divise parfois la critique. Certains lui reprochent un scénario trop tiré par les cheveux (ce qui est un comble pour un film sur les voyages dans le temps) et des effets spéciaux datés (le fameux "couloir du temps" en CGI bleu azur).