Throughout the series and specifically in the book De Droom van Alfred Jodocus Kwak, the character of Kaspar Rokodil and Olaf Nijlpaard have set up many projects together. In the book they specifically merge their names to form different chains of restaurants or other services. The book unfortunately confuses Kaspar Rokodil with his father Alfons Rokodil, meaning that sometimes this article is referring to the book instead of the animated series.

=Companies from the books

=De Olkas Huisvloer Hallen

(lit. "The Olkas Housfloor Halls")

Combining the first parts of their first names they form the word "Olka". Olka's huisvloer hallen was a chain of which there was one instance in Polderstad-Centrum, behind the Stompe Toren. For this location an old monestary had to be demolished.