You will Watch The Scooby-Doo Show Season 3 Episode 1 online for free episodes with HQ / high quality. Stream cartoons The Scooby-Doo Show Episode 25 Watch Out! The Willawaw! Velma gets asked by her uncle Dave to visit. But while visiting, they find out that he’s vanished. They soon encounter the legendary Willawaw and two Owlmen who may be responsible for Uncle Dave’s disappearance.