Will Smith Floyd Lawton / Deadshot Jared Leto The Joker Margot Robbie Harleen Quinzel / Harley Quinn Joel Kinnaman Rick Flag Viola Davis Amanda Waller Jai Courtney George 'Digger' Harkness / Boomerang Jay Hernandez Chato Santana / El Diablo Adewale Akinnuoye-Agbaje Waylon Jones / Killer Croc Cara Delevingne June Moone / Enchantress Ike Barinholtz Keith Griggs Scott Eastwood Lieutenant GQ Edwards Adam Beach Christopher Weiss / Slipknot Karen Fukuhara Tatsu Yamashiro / Katana Common Monster T David Harbour Dexter Tolliver Jim Parrack Jonny Frost Alex Meraz Gomez - Seal Team A Corina Calderon Grace Santana Ben Affleck Bruce Wayne / Batman Ezra Miller Barry Allen / The Flash Robin Atkin Downes Angelo Shailyn Pierre-Dixon Zoe Lawton Matt Baram Dr. Van Criss Alain Chanoine Gerard Davis / Incubus Ted Whittall Admiral Olsen Michael Murray Admiral Burns Jaime FitzSimons Sergeant Ames Bravo 14 Bambadjan Bamba T-Shirt Vendor Robert B. Kennedy U.S. Marshal Billy Otis Mafia Snitch James McGowan Panda Man Aidan Devine Chairman Andrew Bee Navy One-Star Admiral Frank J. Zupancic Army One-Star General Kent Sheridan National Security Council Amanda Brugel National Security Council Ho Chow Gate Guard Kenneth Choi Yakuza Boss Sergio Kato Hispanic Man Kevin Kent Prisoner John Macdonald Arkham Guard Stewart Dan Petronijevic Anvil Mark Quigley US Ranger Darryl Quon Big Ugly Navy SEAL Hugh Scott American Hostage