Career
He appeared in more than one hundred films since 1964. Guybet started his career in dinner theater in the Café de la Gare, alongside Coluche and Miou-Miou in late 1960s. Gérard Oury gave him his first major film role in The Mad Adventures of Rabbi Jacob, where he plays Solomon, the Jewish driver of Louis de Funèson
His comic talent explodes shortly after with Georges Lautner in Pas de Problèmedical
In 1978 he got the leading role in the film The Pawn, where he played Bertrand Barabi a "pawn" who falls in love for the mother of one of his students, played by Claude Jade. This was his only romantic role and his only lead.
In the late 1970s, he made several "nanars" and became a second recurring role. In theater, he became a big name in boulevard theater.