A Wicked poster is an advertisement image for the musical or film adaptation of "Wicked," typically featuring the main characters, Elphaba (the Wicked Witch of the West) and Glinda, with elements like color contrast, typography, and imagery designed to convey the themes of the story. The iconic poster often includes Elphaba partly obscured by her hat, while Glinda whispers into her ear, reflecting the original Broadway design.