Macherot began his stint at "Spirou" with a new series, "Chaminou", featuring a cat secret agent to the King, living in the country Zoolande. However, Chaminou's first story, "Chaminou et le Khrompire" (1964), was unpopular and Macherot abandoned "Chaminou". Closer to "Chlorophylle", "Sibylline", featured a female mouse and her fiancé Taboum. Many books have been published in this series, which enjoyed some success. From 1972 to 1976, Paul Deliège wrote the scenarios for "Sibylline". Macherot ended the series upon his retirement in 1990.