Martin Freeman, David Tennant, Imelda Staunton, Russell Tovey and Ashley Jensen have also signed up to voice characters in "The Pirates! Band of Misfits".
Hugh Grant will play a captain who battles it out with his bitter high-seas rivals, voiced by Jeremy Piven and Salma Hayek, to win the much coveted Pirate of the Year Award in the film, which is set for release next year.
Producer Peter Lord says, "I'm so grateful to the entire cast for their talent and energy. The characters that they've created fill the screen with life and fun. As the Pirate Captain, Hugh Grant has given a stand-out performance... only Hugh could anchor this story of love, loyalty, greed, and nautical high-jinks."