John Arne Sæterøy, who signs his work with Jason, is one of Scandinavia's most prominent artists of alternative comics. Born in Molde, he started comics career when he was only fifteen years old, publishing in the alternative Norwegian magazine KonK. In 1987 he enrolled at he Art Academy of Oslo to study graphical design and illustration, and subsequently studied at the National School of Arts and Industry. In 1995, a year after graduating, he published a realistically drawn graphic novel, 'Lomma full av Regn' ('Pocket Full of Rain'), for which he won the Sproing Award.
Two years later, he founded his own comic book Mjau Mjau, in which he developed his own minimalist style, employing animals as his main characters, inspired by Lewis Trondheim, Jim Woodring and Tex Avery.