Will Smith (Deadshot), Jaime Fitzsimons (Sergeant Ames Bravo 14), Jared Leto (Joker), Margot Robbie (Harley Quinn), Cara Delevingne (Enchantress / June Moone), Jai Courtney (Captain Boomerang), Joel Kinnaman (Rick Flagg), Viola Davis (Amanda Waller), Jay Hernandez (Diablo), Adewale Akinnuoye-Agbaje (Killer Croc), Ike Barinholtz (Griggs), Bambadjan Bamba (T-Shirt-Verkäufer), Ted Whittall (Admiral Olsen), David Harbour (Dexter Tolliver), Robin Atkin Downes (Angelo), Scott Eastwood (Lieutenant GQ Edwards), Karen Fukuhara (Tatsu Yamashiro / Katana), Ben Affleck (Bruce Wayne / Batman), Adam Beach (Christopher Weiss / Slipknot), Amanda Brugel (Nationale Sicherheitschefin), Jim Parrack (Jonny Frost), Alex Meraz (Gomez - Seal Team A), Alyssa Veniece (Hispano-Frau), Ariane Bellamar (Supermodel), Kevin Hanchard (Casinoleiter), Michael Murray Scratch (Admiral Burns), Bex (Clubbesucher), Corina Calderon (Grace), Murray Urquhart (Navy SEAL (Bravo Team)), Common (Tätowierter Mann)