Harleen Quinzel, better known by the name Harley Quinn, is a crazy and often dangerous enemy of Batman and Robin. In Season 3 of Teen Titans Go!, she started making many episode appearances, although they are little more than cameos.
With a bright intellect and knack for gymnastics, Harleen Quinzel's future was looking pretty good. She had many career options before her, such as biology and psychiatry, but she eventually settled on criminal psychology. Taking this road brought her into contact with the maniacal Joker, who slowly seduced her while in Arkham Asylum. Eventually, Harleen's love for the Joker was so strong that she killed a guard and freed him from his cell. Envisioning his therapist as a good partner, the clown later shoved Harleen into the same vat of chemicals that he had fallen into. Now they could be two psychopaths together.
After a violent crime spree across Gotham City, Harley Quinn was eventually captured by the Black Canary and locked away in Belle Reeve prison. She managed to avoid execution thanks to her enlistment in a secret force, the Suicide Squad.
So far, Harley Quinn has yet to make a prominent appearance in Teen Titans Go!. Apart from her picture featured in a few episodes, she made her first in-person debut in "The Titans Show" when she stood among Batman's Rogues. Harley also made a big-screen appearance in Teen Titans Go! To the Movies, but again, just as a cameo.
Taking inspiration from the similarly named "harlequin" (basically, an Italian Renaissance jester), Harley Quinn wears a tight-fitting, red and black jumpsuit. The two colors are separate but complimenting throughout the outfit, with dividing color lines running down her chest and waist. One of Harley's boots is red—the other is black—and she has diamond patterns on her hips and shoulders. In addition to white cuffs and a white collar, her face is also a very pale color, having been bleached by the Ace Processing Chemicals. To help conceal her identity, Harley Quinn wears a mask similar to Robin's. And finishing up her harlequin look is a red and black jester hat with two bells dangling on either side.
Powers and Abilities
- Toxin Immunity: Most toxins and drugs, such as Poison Ivy's touch or Joker Venom, have no effect on Harley Quinn.
Weapons and Equipment
- Guns: Harley Quinn has some experience with many different firearms, but she prefers to carry the Chiappa Rhino 60 DS, a six-shot .357 magnum revolver.
- Baseball bat: For her main melee weapon, Harley Quinn uses a wooden bat to great effect.
- Mallet: Occasionally, Harley will be seen swinging an oversized mallet to bash some heads in.
- Grenades: In the video game Teeny Titans, there's a shot of Harley Quinn holding a fuse grenade.
- Psychiatry: Before her life of crime, Harley specialized in studying mental disorders like Pyro's.
- Gymnastics: Harley Quinn is highly flexible and agile thanks to her gymnastic studies.
- Martial Arts: Her aptitude in coordination and strength have also lead to highly-stylized fighting tactics.
- Stealth: Although she's a literal attention whore, Harley Quinn can go ninja stealth mode when needed.
- "Accept the Next Proposition You Hear" (cameo on magazine)
- "Booby Trap House" (cameo on baby pool)
- "Scary Figure Dance" (cameo on the candy factory)
- "Rad Dudes with Bad Tudes" (cameo on sticker)
- "The Titans Show" (in person debut, cameo)
- "BBCYFSHIPBDAY" (cameo on magazine)
- "Egg Hunt" (cameo on cell)
- "Starstruck" (cameo on cover)
- Teen Titans Go! To the Movies (cameo)
- In "BBRAE", when Robin converts the Titan's kitchen area into a therapist's office, Harley's hood can be seen spotted on a shelf along with a bust of Hugo Strange.
- For a brief instant in the episode "Rad Dudes with Bad Tudes", there's a sticker of Harley Quinn as she appears in the 2016 Suicide Squad movie. The sticker only shows her face and neck, though, since anything more would be slightly improper in a kid's cartoon.
- During "Costume Contest", Robin shows the Titans some Halloween costume concept art of them dressing up as the Suicide Squad. He depicts Starfire as Harley Quinn.
- However, the costume has been tweaked for modesty.
- Tara Strong, who voices Raven in Teen Titans Go!, voiced Harley Quinn in many DC Comics works, including:
- In addition, Hynden Walch, the voice actor for Starfire, also took on the role of Quinn in Batman: Assault on Arkham, The Batman 2004 series,  and Batman: Hush
- A tree in the episode "Starfire the Terrible" is carved with the words "Quinn + Mr. J" inside of a heart, a nice reference to Harley and the Joker's luny relationship.