Martin-Jan van Santen, who uses the pseudonym Martian, is a creator of animation series. He has created among others 'Bobby's Body', 'The White Cowboy' (VPRO) and 'Egoland' (BNN). For 'Egoland', he was the scriptwriter and director, as well as the voice actor of Beatrix. Martian has also created comics with 'The White Cowboy', of which an album was published by Big Balloon in 2003.
Van Santen then created the comic 'De Avonturen van Ridder Roosje' with Paul Reichenbach, that appeared in the Kampen newspaper De Brug. The first album was published by Reichenbach's company Pear Productions in 2008. He runs the Bullet Hole Studios in Kampen, together with Peter Oudman.