Harleen Quinzel (also known as Harley Quinn) is a supporting character in the second generation of the DC Super Hero Girls franchise. Harleen is a student at Metropolis High School, and is also Batgirl's best friend and current sidekick. She was a recurring antagonist and a member of the Super Villain Girls for both seasons of the series, until the movie Teen Titans Go! & DC Super Hero Girls: Mayhem in the Multiverse where she becomes the seventh member of the Super Hero Girls. According to Laur