- Abate and Switch
- Abnegazar
- About the series
- Ace
- All Aboard the Space Train
- Amazo
- Amazons
- Andy Richter
- Apokolips
- Aquaman
- Armin Shimerman
- Athena
- Atom
- Atrocitus
- Bane
- Barehanded
- Batarang
- Batgirl
- Batman
- Batmobile
- Batplane
- Battle for the Bottled City
- Beep Beep!
- Bernadeth
- Best Day Ever
- Big Barda
- Bizarro
- Black Adam
- Black Canary
- Bleez
- Blue Beetle
- Booray for Bizarro
- Booster's Gold
- Booster Gold
- Boss Kack
- Brainiac
- Brent Spiner
- Brother Night
- Brothers Djinn
- Bud and Lou
- Cain
- Calculator
- Calythos
- Captain Bamboozle
- Carl Reiner
- Carmine Falcone
- Charlie Schlatter
- Cheetah
- Chemistry
- Chris Diamantopoulos
- Christian Slater
- Chronos
- Circe
- Classic Rock
- Cloris Leachman
- Clown Party
- Constantine
- Crispin Freeman
- Cyborg
- Daily Planet
- Damian O'Hare
- Dan Donohue
- Dana Snyder
- Dania Ramirez
- Darin De Paul
- Darkseid
- David Lodge
- David Sobolov
- Dayci Brookshire
- Deadshot
- Desaad
- Despotellis
- Dex-Starr
- Diedrich Bader
- Doctor Fate
- Doctor Light
- Double Cross
- Driver's Ed
- E. Nigma, Consulting Detective
- Eezy Freezy
- Ely Henry
- Ember
- Erica Luttrell
- Etrigan
- Faora
- Felix Faust
- Field Trip
- Firestorm
- Flash
- Follow that Space Cab!
- Forget Me Not
- Fortress of Solitude
- Fred Tatasciore
- Freezer Burn
- Fryda Wolff
- Galaxy Jest
- Garden of Evil
- Gary Cole
- General Zod
- Ghast
- Gilbert Gottfried
- Gillian Jacobs
- Good Cop, Bat Cop
- Gorilla Grodd
- Gotham City
- Granny Goodness
- Green Arrow
- Green Lantern
- Green Lantern Corps
- Grey Griffin
- HIVE
- HIVE Master
- Hall of Justice
- Hannibal Buress
- Harley Goes Ape!
- Harley Quinn
- Hat Trick
- Hawkman
- Hippolyta
- House of Mystery
- Inside Job
- It'll Take a Miracle!
- It's a Trap!
- Ivy League
- Jake T. Austin
- James Woods
- Jasika Nicole
- Jason Blood
- Jason J. Lewis
- Jerry O'Connell
- Jessica Walter
- Jim Ward
- Jimmy Olsen
- Joanne Spracklen
- John Astin
- John DiMaggio
- John de Lancie
- Joker
- Jon Cryer
- Jon Lovitz
- Jonah Hex
- Jonas Glim
- Jonathan Adams
- Josh Keaton
- Julianne Grossman
- Justice 1, 2, 3, Go!
- Justice League
- Justice League Action Run
- Justice League Action Wiki
- Justice One
- Justice Two
- Kalibak
- Kandor
- Kanjar Ro
- Kanto
- Keeping up with the Kryptonians
- Ken Jeong
- Kevin Conroy
- Kevin Shinick
- Khary Payton
- Killer Frost
- Klarion the Witch Boy
- Krypto
- Kryptonite
- Lacey Chabert
- Lashina
- Lasso of Lies
- Laura Post
- Lex Luthor
- List of villains
- Lists of episodes
- Lobo
- Lois Lane
- Luthor in Paradise
- Mark Hamill
- Martian Manhunter
- Max Mittelman
- Melissa Disney
- Mena Suvari
- Merlin
- Metallo
- Metropolis
- Michael Dorn
- Mint Condition
- Missing the Mark
- Mister Freeze
- Mister Mind
- Mister Miracle
- Mister Mxyzptlk
- Mister Terrific
- Mongul
- Mxy's Mix-Up
- Natalie Lander
- Natasha Leggero
- New Gods
- Night of the Bat
- Noel Fisher
- Nuclear Family
- Nuclear Family Values
- Nyorlath
- Oliver Vaquer
- P. J. Byrne
- Parademons
- Paradise Island
- Parasite
- Party Animal
- Patrick Seitz
- Patton Oswalt
- Paula Rhodes
- Penguin
- Perry White
- Peter Jessop
- Peter Stormare
- Phased and Confused
- Piotr Michael
- Plastic Man
- Plastic Man Saves the World
- Plastic Man of Steel
- Play Date
- Poison Ivy
- Power Outage
- Professor Stein
- Quality Time
- Quex-Ul
- Race Against Crime
- Rachel Kimsey
- Rage of the Red Lanterns
- Rath
- Red Lantern Corps
- Red Tornado
- Red Velvet
- Repulse!
- Riddler
- Robert Picardo
- Rock of Eternity
- Roger Craig Smith
- Roxy Rocket
- S.T.A.R. Labs
- Sean Astin
- Selfie Help
- Shazam
- Shazam Slam
- She Wore Red Velvet
- Sid Sharp
- Sinestro
- Sinestro Corps
- Skallox
- Skyjacked
- Solomon Grundy
- Something in the Hair
- Space Cabbie
- Special Delivery
- Speed Demon
- Star Sapphire
- Stargirl
- Stephen Tobolowsky
- Steppenwolf
- Streaky
- Stryker's Island
- Super Stakeout
- Supergirl
- Superman
- Superman's Pal, Sid Sharp
- Superman Red vs. Superman Blue
- Supernatural Adventures in Babysitting
- Swamp Thing
- System Error
- Tara Strong
- Teekl
- The Brain
- The Brain Buster
- The Cube Root
- The Fatal Fare
- The Goddess Must Be Crazy
- The Ringer
- The Trouble with Truth
- The Wizard
- Thomas Lennon
- Time Out
- Time Share
- Titano
- Toyman
- Toymano a Mano
- Travis Willingham
- Trevor Devall
- Trick or Threat
- Trickster
- Troy Baker
- True Colors
- Two-Face
- Uncle Dudley
- Under a Red Sun
- Unleashed
- Up and Atom
- Uthool
- Vanishing Point
- Virman Vundabar
- Vixen
- Watchtower
- Watchtower Tours
- William Salyers
- Wonder Woman
- Zatanna
- Zilius Zox
- Zombie King
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