Joaquin Phoenix, with his manic laugh, is back as Arthur Fleck, more popularly known as The Joker in the highly anticipated sequel to Todd Phillips’ 2019 psychological thriller. But this time, he has a new partner-in-crime as Lady Gaga takes over the role of Harley Quinn, a character who shares his eccentricities and is also his love interest. Warner Bros released the first teaser trailer for the sequel on Tuesday, offering DC fans an exciting glimpse of the magic that’s about to unleash in front of them.