Dee Bradley Baker is an American voice actor from Indiana. He first became known for voicing Olmec in Legends of the Hidden Temple before voicing Daffy Duck in Space Jam. He is well-known for voicing Klaus in American Dad, the Clone Troopers in several Star Wars media, Ra's al Ghul in Batman: Arkham City, Momo and Appa in Avatar: The Last Airbender, Perry the Platypus in Phineas & Ferb, Sunny Jim in Lobo, Kevin the Sea Cucumber in SpongeBob SquarePants, Numbuh Four in Codename: Kids Next Door and Gravemind in Halo 2.