Orca is a fictional character and an enemy of Batman.
Injustice 2 Comic
She was first seen as part of the Suicide Squad, and was one of the members who was freed by the Copycat Batman.
Orca was also one of the members who stormed stryker's island to free Superman, however she was unsuccessful and was forced to flee with katana.
Orca appeared alongside Killer Croc, Captain Cold, Cheetah, Katana, Man-Bat and Poison Ivy when they stormed Oliver Queen and Dinah Lance's wedding. She tried to attack Conner, however she was instantly shocked by Black Lightning
When Batman and his team went to find the children, Orca and Killer Croc find Plastic Man and Offspring and engage in combat while Harley Quinn and the children flee. It is also revealed that she is pregnant with Killer Croc's child.
When the suicide squad are in Gorilla City, Orca is nearly murdered by an ape. However this is prevented by Killer Croc, announcing his love for her.