Willie the Giant is a giant who lives on a castle on the sky from Mickey and the Beanstalk, a cartoon released with Fun and Fancy Free.

Willie kidnaps the golden harp who sings for make people and animals happy, as a lullaby music to make him asleep.

Mickey, Donald and Goofy rescues the golden harp, thus making Willie angry. He chased them all the way down to the beanstalk, but Mickey and his friends chopped it down and send Willie plummeting down to his apperant death, however at the end, he is still alive, searching for Mickey.