Career
He was hired as a result of former commercial animator Hans Fischerkoesen not being able to come up with adequate story ideas for his short films. Horst was pulled from his job as a popular Berlin newspaper cartoonist to become a gagman for the animation industry. Möllendorff received authorship for at least three films, they include:
Verwitterte Melodie - (Weather-beaten Melody) (1942)
Der Schneemann - (The Snowman) (1943)
Hochzeit im Korallenmeer - (Wedding in the Coral Sea) (1945).