- Playing Against Type: Peter Jessop as Superman.
- Relationship Voice Actor:
- Robin, Karate Kid, Wonder Woman and Black Manta/Solomon Grundy are Sokka, Zuko, Azula, and Tyro/The Big Bad Hippo/Lion Turtle.
- Black Manta/Solomon Grundy, Flash, Wonder Woman and Batman are Kilowog, Razer, Aya and Guy Gardner.
- Superman and Lex Luthor are Sovereign and Saren Arterius.
- Aquaman, Gorilla Grodd, Dawnstar, Lex Luthor, Black Manta/Solomon Grundy, Time Trapper/Captain Cold, and Flash are Red Skull, Thor, Black Widow, the Hulk, Ulik, Dracula, and Justin Hammer.
- Batman, Wonder Woman, Lex Luthor, Black Manta/Solomon Grundy, and Time Trapper/Captain Cold are Batman/Solomon Grundy/Kilowog, Black Canary/Fire, Sgt. Rock/Major Force, Black Manta/Lex Luthor and Red Tornado/Thomas Wayne.
- Flash, Time Trapper/Captain Cold, Wonder Woman, Lex Luthor, and Black Manta/Solomon Grundy are Kid Flash, the Brain, Dreamer/Whisper A'Daire, Deathstroke/Ubu, and Martian Manhunter/John Stewart/Mal Duncan.
- Dawnstar and Gorilla Grodd are married in real life.
- Production Posse: Producer Giancarlo Volpe was sure to market this aspect on social media sites. The cast contains many alums of Volpe's previous shows, Avatar: The Last Airbender , Star Wars: The Clone Wars , and Green Lantern: The Animated Series.
- Shrug of God: On which Flash it is.
Trivia / JLA Adventures: Trapped in Time