His roles included Roosevelt Franklin, Clementine, and many of the rock singers on the show, like Bip Bippadotta, the lead singer of the Beetles, the shark who sang "Pearl White Teeth," and Little Chrissy, who was eventually taken over by Van Dijk's band member Lesley van der Lek. Van Dijk voiced animated insert characters like Travis Travel (translated as "Rinus Reis") as well. He was active on Sesamstraat until the early 1990s.