Jonny Quest is an American animated science fiction adventure television series that ran from September 18, 1964 to March 11, 1965. Produced by Hanna-Barbera Productions for Screen Gems, and created and designed by comic book artist Doug Wildey, the series starred voice actors Tim Matheson, Mike Road, Danny Bravo, John Stephenson, and Don Messick. | Killer Toys & Games

The Invisible Monster from Jonny Quest was one of the creepiest creatures in the series. It couldn’t be seen, but trees exploded into splinters and fences ripped apart wherever it passed. It fed, leaving nothing behind but that haunting electronic wail. | Horror4Kids

Jonny Quest ... Em o Monstro invisível.. | Desenhos Eternos II

What's scarier than a giant monster trying to eat you? An even bigger monster trying to do the same thing!! | Boxoffice Movie Scenes

That monster was scary before we knew he could swim | Boxoffice Movie Scenes