Wim T. Schippers was a Dutch artist, writer, television director, and voice actor. During the 1960s, he worked mostly as a visual artist, associated with the international Fluxus-movement. As a television writer, director, and actor he was responsible for some of the most notable and controversial shows on Dutch televisions from the 1960s to the 1990s. In addition, he voiced the characters of Ernie and Kermit the Frog on Sesamstraat, the Dutch version of Sesame Street.