Mark: Mechanics and software.
Renze: software and electronics.
Govert: PR, game engines.
Eric-Jan: Mechanics and parts manufacture.
And another wizard, but Govert still has to ask him if he can mention his name, it might be a sekrit.
TkkrLab: The hackerspace from Enschede, who graciously lets us use the space on Thursday evenings to enjoy our hobby in good company.