Cast
Scott Menville as Robin, Batman's sidekick and the de facto leader of the Teen Titans who uses gymnastic skills, martial arts and various weapons to fight crime.
Jacob Jeffries as Robin's singing voice for the song "My Superhero Movie".
Hynden Walch as Starfire, a beautiful Tamaranean princess who has the ability to fire bright green-colored bolts of ultraviolet energy and green laser beams as well as possessing immense physical strength and supersonic flight. She is also shown to have a villainous older sister known as Blackfire.
Tara Strong as Raven, a human sorceress who is secretly half-demon and has the ability to fly, use telekinesis, teleportation and magic as well as open portals to other dimensions. She is also the daughter of an inter-dimensional satanic-like demon named Trigon and a human named Arella and was originally born on Azarath, her former birthplace and home realm.
Khary Payton as Cyborg, a cybernetic enhanced human cyborg who was once a former athlete and football player. He has the power of using a variety of weapons from his mechanical body as well as possessing enhanced strength. He is also the oldest of the Teen Titans, Beast Boy's best friend and even a member of the Justice League.
Greg Cipes as Beast Boy, a green-skinned humanoid, a member of the Teen Titans and Cyborg's best friend who is the youngest and comic relief of the group and has the power to shapeshift into various animals of all shapes and sizes.
Will Arnett as Slade, a supervillain and Robin's nemesis.
Kristen Bell as Jade Wilson, a famous filmmaker, who is actually Slade in disguise, and let the Teen Titans try to persuade to make a movie about them.
Eric Bauza as:
Aquaman, a member of the Justice League and King of Atlantis.
Stan Lee's assistant
Michael Bolton as Tiger
Nicolas Cage as Superman, a member of the Justice League and survivor of Krypton. Cage, who is a big fan of Superman, was intended to play Superman in the cancelled film Superman Lives directed by Tim Burton. He later portrayed an alternate version of the character in the 2023 film The Flash, in a cameo appearance.
Joey Cappabianca as Plastic Man, a member of the Justice League.
Greg Davies as Balloon Man, a balloon-themed supervillain.
John DiMaggio as:
Guard
Synth Skate Voice
Halsey as Wonder Woman, a member of the Justice League and Princess of Themyscira.
David Kaye as:
The Alfred trailer announcer
Announcer Inside Premiere
Tom Kenny as Machine Voice
Jimmy Kimmel as Batman, a member of the Justice League and Robin's mentor.
Kal-El Cage (Nicolas Cage's son) voices a younger Bruce Wayne.
Stan Lee as himself. This was Lee's first and only appearance in a DC Comics film, before his death in November 2018.
Vanessa Marshall as Vault Voice
Phil Morris as:
John, the red carpet announcer
D.O.O.M.S.D.A.Y., a streaming device
Patton Oswalt as Atom, a member of the Justice League.
Alexander Polinsky as Control Freak, a media-manipulating enemy of the Teen Titans.
Meredith Salenger as Supergirl, the cousin of Superman.
Dave Stone as Kyle "Ace" Morgan, leader of the Challengers of the Unknown.
Fred Tatasciore as:
Jor-El, the late father of Superman
Security Guard
James Arnold Taylor as Shia LaBeouf, who is cast for the role of Slade in Jade's Teen Titans film.
Lil Yachty as Green Lantern, a member of the Justice League and Green Lantern Corps.
Wil Wheaton as The Flash, a member of the Justice League.