Sizzeroo is the king of Umbrella Island.
He is a plump, jovial, benign, monarch, with a gentle moral sense; when he faces a cynical realpolitick policy, he is reduced to tears. He enjoys steering his aerial domain through the skies, though he is not necessarily the best person for the job. He pays close attention to his wardrobe. He is the father of Reeda, his crown princess and heir. (Speedy in Oz)