Dynasty recently uploaded a video that contains content obtained through the files of the PC version of Injustice 2. Within the digging, the main piece is a render of Killer Croc found. Killer Croc only appears in Injustice 2 through a stage transition similar to Darkseid in Injustice: Gods Among Us.
Also, Dynasty goes through some gear sets for characters including what looks to be a gear set for Green Arrow where he would have a hood, finally.
Injustice 2 PC reveals: Killer Croc & Unused Gear Sets including Hood for Green Arrow