Happy Cat is a character on Duck Dodgers. His vocal effects were provided by the late Mako Iwamatsu, who also voiced Lord Aku in Samurai Jack.
Happy Cat is a corporate mascot for a large line of products. Happy Cat makes numerous appearances in the show. Dodgers frequently destroys it in a comedic fashion but it always operates, mocking Dodgers for his failure to quiet him. He looks like Cheshire Cat from Alice in Wonderland.