From an interview with Phil Lamarr, voice actor for Aquaman in Injustice 2:
One of the threads of questions that tends to make it in interviews such as these is who else would you voice if anyone? The question generally gets the same answer from interview to interview, and it shows the respect the voice actors’ have for one another’s work.
“Someone who is not in the game, my favorite would be Static Shock. You know, he made it into the mobile game… But, yeah. As far as the characters in the game, it’s so tough because all I hear are the voices of my friends. Like I hear Kevin Conroy doing Batman and I’m like, ‘Yeah, can’t do a better Kevin Conroy than Kevin Conroy, so I don’t want to do that. I can’t do a better Superman than George.’ It just feels like eh, I’ll stick with what I can do. Because I can’t do better than those guys.”
Static Shock deconfirmed...
http://dualpixels.com/2016/08/03/injustice-2-interview-with-phil-lamarr-at-sdcc-2016/