Professor Balthazar is a Croatian animated series filmed from 1967 to 1978 at Zagreb Film. The series consists of 59 episodes, each five to ten minutes long. To this day, it remains the most successful project of the Zagreb School of Animated Film. The creator of Professor Balthazar’s character was Zlatko Grgić and Pavao Štalter named the likeable scientist who, with the help of imagination and positive energy, solves his fellow citizens’ problems in Balthazar-town. The project involved a team of twenty individuals including, in addition to the aforementioned, Ante Zaninović, Boris Kolar, Milan Blažeković, Zlatko Bourek, and music composer Tomica Simović. The series became very popular in Croatia and noted a substantial success abroad as well. In 2005, production began on new episodes of the cult cartoon.