'Fix und Foxi'.
During the late 1950s, Vjekoslav Kostanjšek worked in animation at Zagreb Film. He eventually settled in Munich, Germany, where he joined the art staff of Rolf Kauka. Kostanjsek was art director of the comics production from 1974 to 1993, and his main occupation was correcting other artists' work. He did however drew several stories and covers himself.
'Fix und Foxi'.