Marsai Martin
as
Aggro
Skai Jackson
as
Summer
Takehito Koyasu
as
Gorilla Grodd
Akira Ishida
as
Red Hood
Kengo Kawanishi
as
Red Robin
Greg Cipes
as
Beast Boy / Garfield Logan
Teala Dunn
as
Bumblebee / Karen Beecher
Romi Dames
as
Lena Luthor
Spike Brandt
Director
Frances Conroy
as
Auntie Em / Glinda
Todd Stashwick
as
The Cowardly Lion / Zeke
Stephen Root
as
Uncle Henry
Sam Liu
Director
Bruce W. Timm
as
Arkham Radio Man
Bruce Greenwood
as
Batman / Bruce Wayne
Jennifer Carpenter
as
Selina Kyle
Marsai Martin
as
Aggro
Skai Jackson
as
Summer
Jennifer Coolidge
as
Binky
Cher
as
Cher
Julian Sands
as
Purrbles
Liliana Mumy
as
Benedict
Tara Strong
as
Lady Meowford / Cali / Cleo / Flitter / Purdy / Liberty / Posy / Chirpy / Others
Jessica DiCicco
as
Sky Angel / Shelby / Dinky
Tara Strong
as
Ball Kid 2 / Jumping Kid 2 / Swinging Kid 1
Carlos Alazraqui
as
Walden / Earl / Swinging Kid 2 / Ball Kid 1 / Photographer / Dr. Flooey / Chef Fritz / Moo Moo the Magician / Sweet Tooth Tom / Store Clerk / Announcer / TV Character
Arsenio Hall
as
Captain Crothers
Ron Perlman
as
Captain Skunkbeard / Biff Wellington
Frank Welker
as
Scooby-Doo / Fred
Maxwell Atoms
as
I'll Cut You Guy / Pirate #2 / Horrorbot / Burnt Skeleton Guard
Lauren Tom
as
Numbuh Three
Phil LaMarr
as
Space Villain / Glacier of Evil / Dracula / Judge Roy Spleen / Underworld Cop
Ben Diskin
as
Spook
Bill Farmer
as
Various
'Weird Al' Yankovic
as
Gentleman Ghost / Darkseid
Sean Maher
as
Nightwing
Scott Menville
as
Robin
Mae Whitman
as
Batgirl
Teala Dunn
as
Bumblebee
Hynden Walch
as
Starfire
Fuminori Kizaki
Director
Wataru Takagi
as
Enzo
Takahiro Fujiwara
as
Fortitudo
Daisuke Namikawa
as
Luka
Kofi Sarkodie-Mensah
as
Kofi Kingston
Frank Welker
as
Scooby-Doo / Fred Jones
Matthew Lillard
as
Shaggy Rogers
Mark Hamill
as
Alighiero
Vanessa Branch
as
Beatrice
H. Richard Greene
as
King Richard / Socrates
Frank Welker
as
Astro
Trevor Devall
as
Elroy Jetson
Michael Coulthard
as
Michael Cole
Dee Bradley Baker
as
Additional Voices
Michael Massee
as
Bruce Banner
James Arnold Taylor
as
Bucky / Additional Voices
Fuminori Kizaki
Director
Samuel L. Jackson
as
Afro Samurai / Ninja Ninja
Mark Hamill
as
Bin / Oden Shop Master
Lucy Liu
as
Sio