The movie revealed the background stories for the members of the Suicide Squad and how each Squaddie was caught. For Jai Courtney's Boomerang, it was revealed The Flash had captured Boomerang during an armed robbery; however, Jai Courtney lets it be known that he only learned about The Flash after watching the movie.
"I didn't f---ing know that was happening when we were filming. That was a surprise for me when I saw the film," Jai Courtney told Business Insider.
Courtney continues with mention of how the scene was originally written in the Suicide Squad script.
"It was written like we didn't really know," Courtney said. "But it's part of the roundup of the squad, so my interpretation was that he had been taken out by [Rick] Flag's crew. But it's not specified [in the script]. When I saw it, I was like, of course!"
The article notes that Jai Courtney filmed the scene with a green screen (and we can surmise with Ezra Miller filming The Flash separately and then added in post-production), with Courtney going on to talk how it's a good thing that everything comes together.
"Totally. It was just a nice little thread. That's what's cool about all this," Courtney said. "The potential for that to happen over the course of wherever all this goes is there. The relationships between these characters and different characters in other properties, too. The fact that we can all get into bed and mix it up, the future is bright in that sense."
"Suicide Squad" is now in theaters directed by David Ayer starring Will Smith as Deadshot, Jared Leto as the Joker, Margot Robbie as Harley Quinn, Cara Delevingne as Enchantress, Jai Courtney as Boomerang, Joel Kinnaman as Rick Flag, Viola Davis as Amanda Waller, Adam Beach as Slipknot, Karen Fukuhara as Katana, Adewale Akinnuoye-Agbaje as Killer Croc, Jay Hernandez as El Diablo, and Scott Eastwood in an unknown role.
It feels good to be bad… Assemble a team of the world’s most dangerous, incarcerated Supervillains, provide them with the most powerful arsenal at the government’s disposal, and send them off on a mission to defeat an enigmatic, insuperable entity. U.S. intelligence officer Amanda Waller has determined only a secretly convened group of disparate, despicable individuals with next to nothing to lose will do. However, once they realize they weren’t picked to succeed but chosen for their patent culpability when they inevitably fail, will the Suicide Squad resolve to die trying, or decide it’s every man for himself?