 The puppet show was performed by Pieke Dassen (qv) and his wife  Mia. Pieke played Jan Klaassen, Jennifer Willems (qv) was Katrijn  and Aart Staartjes (qv) their son Jantje. Staartjes also voiced  most of the other characters like Boef and took over the voice of  Katrijn when Jennifer Willems (qv) left the show.