Brian Doyle-Murray is an American comedian, screenwriter and actor. An alumnus of Saturday Night Live, he is the older brother of actor/comedian Bill Murray and has acted together with him in several films, including Caddyshack, Scrooged, Ghostbusters II and Groundhog Day. He has worked in animation on SpongeBob SquarePants and Flapjack.
He provided the voice of Luke, Brian Griffin's first owner, in "Road to Rhode Island", Salty in "A Fish out of Water", and also has a voice credit in Mr. Griffin Goes to Washington". In "A Fish out of Water", he voices Daggermouth on the Nicktoon Daggermouth and Boom Boom.