Cois Cassiers was born on January 29, 1927 in Antwerpen, Flanders, Belgium as François Cassiers. He is known for his work on De stille genieter (1961), De duivel te slim (1960) and Een zonde waard (1959). He died on October 22, 1971 in Antwerp, Belgium.
Brother of Jef Cassiers. He formed a duo with his brother called The Woodpeckers. In the beginning of his carreer (after World War II), he and his brother were payed for their performances with bottles of alcohol.