Denver the Last Dinosaur S02E13 - Battle of the Bands

Denver and the group deck out in wild caveman attire and form a rock group, B.C Rock, to compete in the city wide talent contest, as does Freddy Facknitts (by forming a group of robots called Roborock). However, Dr. Funt and Morton Fizzback kidnap the robot band and Denver and the gang must rescue them.