Harlequin

Harlequin could refer to:
 * Molly Mayne, A DC Comics former super-villain; Wife of Green Lantern (Alan Scott)
 * Duela Dent, A DC Comics super-villain; also went by the code-name, the Joker's Daughter.
 * Marcie Cooper, A member of Injustice Unlimited and foe of Infinity, Inc.
 * Harlequin, A DC Comics super-villain; real name unknown; one-time foe of Alan Scott.
 * Harleen Quinzel, Also known as Harley Quinn; A DC Comics super-villain; former sidekick of the Joker.
 * Harlequin of Hate, A nickname attributed to the Joker.