The Harlequin is the name of four clown-themed DC Comics characters. The original Harlequin was a foe of the Golden Age Green Lantern and later became his wife. The second Harlequin originally debuted as the Joker's Daughter and was a member of the Teen Titans. The third Harlequin was a member of the Injustice Unlimited supervillain team and battled Infinity, Inc. The fourth Harlequin has only appeared on a few occasions and is an enemy of Alan Scott. Joker's daughter becomes Harlequin in Teen Titans #48.