Jean-Paul Walravens, who works under the name Picha, is a Belgian artist and animator who is best known for his satirical and provocative 1975 film 'Tarzoon, de Schande van de Jungle'. He worked as an artist for magazines like Pan, Hara Kiri, Lampoon, La Libre Belgique and the New York Times from 1960. In the same fashion as 'Tarzoon', Picha has made the films 'De Ontbrekende Schakel' (1980) and 'De Big Bang' (1987). He has also made several short animation films for television, including 'Zoolympics', 'Zoo Cup' and 'Les Jules... Chienne de Vie'. A comics version of 'De Ontbrekende Schakel' was published in the Flemish magazine Spetters in 1981.