Daffy Dagan, leader of the Siren Gang, manages to get his hands on the H-Dial and accidentally dials V-I-L-L-A-I-N, which transforms him into a super-villain which Robby's heroes must overcome.; Manhunter and Zook track down the Idol-Head, and Manhunter is transported into the past where he fights the wizard Diabolu and learns the origin of the Idol-Head. Returning to the present, he finally destroys the artifact.