Transponder beam

The Transponder beam was the secret weapon of Mastermind.


The New Scooby-Doo Mysteries

Mastermind acted as a tour guide, giving tours of the Statue of Liberty as cover for building a satellite transponder that would enable him to take over the world.


Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.