Leading the cast of Aquaman: King of Atlantis is Cooper Andrews (The Walking Dead, Shazam!) as the titular character. Joining him in his undersea adventures is Gillian Jacobs (Community, Invincible) as Mera, Thomas Lennon (Supergirl, Reno 911!) as Vulko, Dana Snyder (Aqua Teen Hunger Force, Justice League Action) as Ocean Master, Andrew Morgado (Supergirl, Archer) as Mortikov, Kevin Michael Richardson (The Simpsons, American Dad!) as the Royal Announcer, Flula Borg (The Suicide Squad, Pitch Perfect 2) as Mantis, and Kimberly Brooks (DC Super Hero Girls, Batwheels) as Hammer. Rounding out the voice cast are Chris Jai Alex, Trevor Devall, Armen Taylor, Kaitlyn Robrock, Regi Davis, Ludi Lin, Robbie Daymond, Erica Lindbeck, Laila Berzins and Erica Ash.