Joop Mixingmousse, originally Joop Mengelmoes, was a fictional character from Samson and Gert. He was portrayed by Stef Bos.
Joop was a character in the series from 1990 until 1992. He was the neighbour of Samson and Gert.
- He tried fixing the broken bell.
- Samson ponounced his name as Mr. Chocolatemousse.
- He had a turtle named Marlène.
- He appeared in three music videos.
- He did not appear in the comics.