S1·E10 Search & Estroy

Skarr is evesdropping on Hector and Dr. Ghastly about their new secret weapon- a disenigration gun. Too their dismay Estroy comes up with a better version of the gun. He also surprises them by inviting them to dinner. Hector accepts as a way to steal some of his ideas. Hector and Ghastly arrive at Estroy's neighboring island while Skarr slips around the back. Of course he falls while scaling the wall and lands in a pond of electric eels. At dinner, Estroy tries to recruit Dr. Ghastly. In the meantime, Skarr has gotten into the building and he reaches the secret plans. Estroy reveals that his intentions were to make Dr. Ghastly his new assistant. She's reluctant to the idea and they leave in a huff. Back at home, Skarr reveals the plans to them and they immediately begin construction. All goes well until the test drive... of course, if it can go wrong it does! In fact, it ends up blowing up the entire evil lair! Estroy makes sure to thank them for doing a "test run for him."