"I hope I'm not disturbing you."
-Grumper to Princess Oriana
Grumper is an aristocrat who betrayed Princess Oriana and aided in the Duke of Zill's plans of taking over the magic world of Oriana and he is a minor villain in Felix the Cat: The Movie. Minister Grumper who serves within the Orianian aristocracy, was originally a scientist by his former alias Professor Grumper, and that he once worked with another scientist, a selfish uncle of Princess Oriana who despised her father and fed up with his peaceful rule. Professor Grumper and his partner survived the explosion in an accident while they were working on robotic machines capable of manuel labor called Cylinders. Grumpy was very lucky since he was the one who helped the Duke invade the Kingdom of Oriana. Grumper in the end became imprisoned for his treachery after.