Scooby-Doo and the Alien Invaders

Scooby-Doo and the Alien Invaders is the third of a series of direct-to-video animated films based upon the Scooby-Doo Saturday morning cartoons. It was released on October 3, 2000, and it was produced by Warner Bros. Animation (though it had a Hanna-Barbera Cartoons logo and copyright notice at the end).