Career
Hernadi has served as an animation director and layout artist in several animated films throughout his career. He had also directed 86 animated Red Bulletin commercials between 1992 and 2012. After working as a director on short animated films, Hernadi made his full-length directorial effort in Felix the Cat: The Movie, which was released in the United Kingdom in October 1988.
He also served as the layout artist for the film.
The film was heavily panned by critics and fans of the original cartoons. In 1995, Hernadi co-wrote and co-directed The Seventh Brother along with Jeno Koltai.
He also served as the character designer of the film. Hernadi died in July 2012, in Hungary.