In February 2009, a Suicide Squad film was in development at Warner Bros. Pictures. In September 2014, Ayer signed on to write and direct, Ayer described the film as a "comic-book version of The Dirty Dozen (1967)." By April 2015, Will Smith, Jared Leto, Margot Robbie, Joel Kinnaman, Viola Davis, Jai Courtney, Jay Hernandez, Adewale Akinnuoye-Agbaje, Cara Delevingne and Karen Fukuhara were cast. Principal photography began in April and concluded in August 2015, locations included Toronto, Ontario, Canada with additional filming in Chicago, Illinois. To achieve the camaraderie that Ayer wanted for the squad, the cast spent time together on-and-off set. Even going so far as to every one of them getting the tattoo "SKWAD" in honor of the film. During shooting, Leto got so immersed in playing The Joker that he wouldn't break out of character. He even sent his fellow cast members "Joker-like" presents: a live rat to Margot Robbie and bullets to Will Smith, a soiled Playboy magazine to Adewale Akinnuoye-Agbaje and a dead hog, anal beads and used condoms for the whole crew. Scott Eastwood, commented that Leto frightened him at times with his behavior, and Smith mentioned that he actually never met the real Leto. It was suggested that because of the dark and tormenting nature of the film, an on-set therapist was hired to keep the cast grounded.
The film stars an ensemble cast including Will Smith, Jared Leto, Margot Robbie, Joel Kinnaman, Viola Davis, Jai Courtney, Jay Hernandez, Adewale Akinnuoye-Agbaje, Cara Delevingne and Karen Fukuhara. The cast their best despite little to no characterisation to work off of. The ones to benefit the most were Smith, Robbie, Kinnaman and Davis. It was unfortunate however for Courtney, Hernandez, Akinnuoye-Agbaje, Delevingne, Fukuhara and Leto. With Leto being the most unfortunate as he was criminally underused when he brought a stand-out performance.
Simon says Suicide Squad receives: