<Li> Josh Keaton provided the speaking voice of Hercules as a teenager, while Roger Bart provided his singing voice . Originally, Keaton provided also his singing voice, but his singing was re-recorded by Bart . Randy Haycock served as the supervising animator for Hercules as an infant and teenager . </Li> <Li> Danny DeVito as Philoctetes / Phil . Eric Goldberg, the supervising animator for Philoctetes, cited Grumpy in Snow White and Bacchus in Fantasia as the inspirations for the character's design . Goldberg mentioned that they discovered that Danny DeVito "has really different mouth shapes" when they videotaped his recordings and that they used these shapes in animating Phil . </Li> <Li> James Woods as Hades . Producer Alice Dewey mentioned that Hades "was supposed to talk in a slow and be menacing in a quiet, spooky way", but thought that James Woods' manner of speaking "a mile a minute" would be a "great take" for a villain . Woods did a lot of ad - libbing in his recordings, especially in Hades' dialogues with Megara . Nik Ranieri, the supervising animator for Hades, mentioned that the character was "based on a Hollywood agent, a car salesman type", and that a lot came from James Woods' ad - libbed dialogue . He went on to say that the hardest part in animating Hades was that he talks too much and too fast, so much so that "it took (him) two weeks to animate a one - second scene". Ranieri watched James Woods' other films and used what he saw as the basis for Hades' sneer . </Li> <Li> Susan Egan as Megara . Supervising animator Ken Duncan stated that she was "based on a' 40s screwball comedienne" and that he used Greek shapes for her hair ("Her head is in sort of a vase shape and she's got a Greek curl in the back ."). </Li>

Who was the voice of hades in hercules