Joker (DC Extended Universe)

"Careful. Do not say this oath…. thoughtlessly. Desire becomes surrender, surrender becomes power. Do you want this?"

- The Joker to Dr. Harleen Quinzel, while convincing her to jump in a vat of chemicals

"Let's go home."

- The Joker to Harley Quinn, after breaking her out of Belle Reve

The Joker is a major antagonist of the 2016 DC Warner Bros. film Suicide Squad. He is a notorious crime lord and psychopathic supervillain who is the kingpin of Gotham City's criminal underworld with his lover and accomplice Harley Quinn. He is also the archenemy of the vigilante  Batman.

He is portrayed by academy award winning actor and musician Jared Leto.

Suicide Squad
Flashbacks in the film reveal that Joker manipulated psychiatrist Dr. Harleen Quinzel into falling in love with him during his time as a patient at Arkham Asylum. He eventually manages to convince her to free him, and after his men take over the asylum, he gives Dr. Quinzel electroshock therapy. Quinzel then volunteers to jump into the chemicals that created the Joker, bleaching her skin and completing her transformation into his lover, Harley Quinn. The Joker and Harley would then be known as the "King and Queen of Gotham". However, Quinn is ultimately apprehended by Batman, and is forced to join Amanda Waller's government task force comprised of captured supervillains.

In present day, the Joker attempts to extract Harley from the "Suicide Squad". He tortures one of Waller's security officers into leading him to the facility where the nano bombs used to control the criminals are manufactured, and threatens one of the scientists there to disable the bomb implanted in Harley's neck. Joker then gives the security officer a cell phone to give to Harley, so that he can signal her when to escape. After commandeering one of Waller's helicopters, Joker and his men rescue Harley in Midway City. However, the chopper is shot down. While Harley jumps out onto a nearby building, Joker seemingly perishes in the explosion, prompting a heartbroken Harley to rejoin the Squad. At the end of the film, the Joker, revealed to have survived the crash, breaks into Belle Reve prison to free Harley from her cell, and the two reunite before Joker says, "Let's go home."

Trivia

 * He is the fourth live action adaptation of the DC supervillain Joker.
 * Unlike many versions of the Joker, this version has no Glasgow Smile.
 * In Batman v Superman: Dawn of Justice, a vandalized Robin costume is seen on display in the Batcave, with the message "Ha ha! Joke's on you, Batman!", showing that the Joker was responsible for killing him. In Suicide Squad, Harley Quinn's introduction states that she was an accomplice to said Robin's death.
 * Also, the Joker is indirectly mentioned by Bruce Wayne to Clark Kent, when he states that Gotham City has a bad history with "freaks who dress like clowns".
 * In April 2015, Jared Leto posted a photo of himself as the Joker holding up a camera, referencing the cover of the acclaimed graphic novel  The Killing Joke.
 * In response to criticisms regarding the Joker's minimal screen time in the film, Jared Leto revealed that many of his scenes were omitted from the final cut.
 * After the film's release, Leto reprised his role as the Joker in the music video "Purple Lamborghini", by Skrillex and Rick Ross, from the film's soundtrack.
 * This version of the Joker seems to be less abusive towards Harley Quinn, and his primary objective in the film is extracting her from the squad. But in a piece of unused footage, the Joker is shown slapping her after she chases him down on a motorcycle. And a cover on a magazine showed the Joker scolding Harley in a scene that was also cut from the final film.