'Joker 2' Harley Quinn Role Gets Margot Robbie's Seal of Approval: She'll Use It for Something Amazing

 In the planned "Joker" prequel, officially titled "Joker: Folie à Deux," as Harley Quinn.

Starring opposite Gaga will be Joaquin Phoenix, who won an Oscar for portraying the role in the first "Joker" movie. 

 Neither Warner Bros. nor Gaga have made it official that she is portraying Harley Quinn, but Gaga is doing so.

 In "Suicide Squad" and "Birds of Prey" and "The Suicide Squad," 

Robbie played Harley in the live-action version that first appeared on film.

The way it is, Harley Quinn is one of those characters.

 Like Macbeth or Batman, which is continuously portrayed by talented actors.