The Genie of Agrabah, currently known as Sidney Glass is a supporting antagonist in the series Once Upon a Time. He serves as the secondary antagonist (until Rumplestiltskin takes over) of Season 1 and a supporting antagonist in the first half of Season 4. He's the alter ego of the Genie from Aladdin and also the Magic Mirror from Snow White. Sidney Glass is based on the troll-mirror from the fairytale "The Snow Queen".He returns in the first half of Season 4.