• Stephen Shin as seen in Aquaman #15 (2012)
• Iris West as seen in The Flash #8 (2012)
• David Singh as seen in The Flash #33 (2014)
• Amanda Waller as seen in Justice League vs. Suicide Squad #2 (2016)

Dr. Stephen Shin was a close friend of Aquaman’s father Tom, and became obsessed with the idea of Atlantis after hearing his stories. When Aquaman refused to share with him the location of Atlantis, Shin turned on him and became his enemy.

Iris West is a reporter in Central City and the girlfriend of Barry Allen, the Flash. In a previous reality they were married, but the Flash accidentally changed history while time-traveling. She is the aunt of Wally West, the third Flash, and Wallace West, Kid Flash

David Singh is Barry (Flash) Allen’s boss at the Central City Police Department’s Forensics Division. His boyfriend Harley Rathaway is secretly the reformed Flash villain known as the Pied Piper.

Amanda Waller is the creator of the Suicide Squad, a top-secret project of the U.S. government where supervillains are sent on missions to reduce their jail sentences. They have small explosives placed in their necks in case they fail or try to flee.