When James Gunn was hired by Warner Bros., the studio gave him the green light to kill off anyone, however, in the end decided to change the ending for The Suicide Squad. Gunn told Variety. he never planned on killing Margot Robbie’s Harley Quinn or Elba’s Bloodsport, but his original pitch for The Suicide Squad ended with two team casualties: Rick Flag (Joel Kinnaman) and Ratcatcher 2.
“There was a change. The original ending that I pitched, one main character died and one main character did not die. And the main character who died was was Ratcatcher 2,”
“She was so sweet, I just felt like it was just too dark. Not that we don’t love Polka Dot Man. We do. I just couldn’t [kill Ratcatcher 2]. So I relented.”
“[Warner Bros. and DC] said I could keep [all the characters] or do away with them all,” Gunn previously told Games Radar. “I could do a completely new squad – which I considered – and they said, ‘You can kill anyone.’ Warner was pretty much on board [with the story] from the beginning – it was pretty much firmly in place from the inception of me taking on the project.”
After surviving The Suicide Squad, Melchior hopes to return to the DCEU as a supervillain “for real.”
“She had the opportunity to talk about her father, so I would love to see a little bit more about it,” Melchior told Entertainment Tonight about her DC future. “But I would love, also, to see Ratcatcher learning from, I don’t know, why not Bloodsport? How to shoot a gun, how to fight with someone, I would love to see her debut as a supervillain for real.”