Not to be confused with Willem Duys.Klaas Willem Ruis (Haarlem, 29 March 1945 – Dénia, 4 August 1986) was a Dutch game show presenter on Dutch public television. He presented the Willem Ruis Show for the KRO and the Willem Ruis Lottoshow, 5 tegen 5 and the Sterrenshow for the VARA. His first name was originally Klaas.He died of a cardiac arrest during a vacation in Spain.