Nolan North

Detective Briggs (voice) / Ugly Dave (voice) / Vladimir (voice)

Conrad Roth / Cowboy Billionaire (voice) / Conrad Roth / De Molay (voice) / Conrad Roth / Guest #2 (voice)

Peter Hastings

Leonard Nimoy (voice)

(voice) / Additional Voices (voice) / Alien News Anchorman / Agent Gribbles (voice) / Alien Waiting in Line / Special Agent Mongo Bongo (voice) / Anderson Cooper / Tom Hanks (voice) / Assimilated Alien 2 (voice) / Cake or Fake? Contestant (voice) / Gromflomite Commander / Gromflomite Soldier / Additional Voices (voice) / Jerry's High School Friend (voice) / Michael / Priest (voice) / Scroopy Noopers (voice) / Tony Hawk / Marvin (voice) / Vice President Dwayne (voice)

Donald Flum

Lou Giotti

El-Les / Computer (voice)

(voice) / Dutch TV Announcer (voice)

Soap Actor

Commander Oscar Northcutt

Canoe Rental Cashier (voice) / College Professor (voice) / DEA Agent (voice)

Captain Benbassat (voice)

Male Anchor

Bradd's Dad (voice)

Ken Walker

(voice) / Cadet (voice) / Command Ensign With Accelerated Growth & Reverse Aging (voice) / Lars Lundy (voice) / Lars Lundy / K'ranch (voice) / Lars Lundy /Borg Head (voice) / Livik (voice) / Livik / Malok (voice) / Niko (voice) / T'Illups / Lars Lundy (voice) / T'im / Sokel / Starfleet Cadet (voice) / Titan's Conn Officer (voice) / Titan's Conn Officer / Karzill IV Miner (voice)

Allen Phaedon (voice) / Baron Bedlam / Frederick DeLamb / Superman (voice) / Clark Kent (voice) / Clark Kent / Superman (voice) / Clayface (voice) / Conner Kent / Superboy (voice) / Everyman (voice) / Federick DeLamb (voice) / Frederick DeLamb / Baron Bedlam (voice) / Kru-El (voice) / Lightray / Zatara (voice) / Marvin White (voice) / Match / Superman / Zatara (voice) / Professor Ojo (voice) / Ronal (voice) / Superman (voice) / Superman / Clark Kent / Marvin White (voice) / Superman / Frederick DeLamb (voice) / Superman / Kru-El (voice) / Superman / Lightray (voice) / Superman / R'ohh K'arr (voice) / Superman / Zatara (voice) / Tribune / Superman (voice) / Zatara (voice) / Zatara / Giovanni Zatara / Superman (voice)

Will Brady

Stoick the Vast (voice)

Brad Chiles (voice)

Rhino Guard (voice) / Shoddy Boat Owner (voice)

Balder (voice) / Brian Calusky / Piledriver / Balder / Dispatch (voice) / Scientist Supreme / Jimmy Woo / Arthur Parks / Living Laser / Balder (voice)

Teen Attendant / Henchman (voice)

Braah / Announcer / Slug Person (voice) / Commander Grundch (voice) / Kraang #1 / Kraang #2 (voice) / Kraang #1 / Kraang #2 / Evil Metalhead (voice) / Kraang #1 / Sewer Worker (voice) / Kraang (voice) / Kraang / Man (voice) / Kraangdroid / Norman (voice)

Marshall Rask (voice)

Host / Dude / Centaur #2 (voice)

Smokescreen (voice)

High Evolutionary (voice)

Art Dealer / Simone Moma

Lewis (voice)

Cyclops (voice)

Exterminator

Alexander Cartwright ​(voice) / Jesse James ​(voice) / John Sutter ​(voice) / Marco Polo (voice)

Blaze

Peter

Jerry Lansing

Handsome Knight / Vendor / Bevin (voice)

Seagull / Dead Parrot / Pigeon Cabbie (voice)

Hal Jordan / Amazo / Homeless Man (voice)

Mitch (voice)

The Penguin / Oswald Cobblepot / KGBeast / Anatoli Knyazev (voic

Stoick (voice)

Green Lantern (voice)

Hans / Twin Guards / King White (voice)

Smokescreen (voice)

Pokolistani Terrorist (voice)

Clark Kent / Police Officer 2 (voice)

Parrot (voice)

Computer / Joker / Superman (voice)

Jor-El (voice)

Raphael / Nightwatcher (voice)

Deadpool (voice)

Hal Jordan (voice)

Superman (voice)

Hank Pym / Giant Man (voice)

Hank Pym / Giant Man (voice)

Deadpool (voice) (archive footage)

Superman / Alfred (voice)

Bobby (voice)

Superman / Clark Kent / Kal-El (voice) and Killer Croc / Waylon

Mr. Simons

Superman / Clark Kent (voice) / Alfred (voice)

Morris / Guard #3 (voice)

Brett

Captain Benbassat (voice)

Clark Kent / Superman (voice)

Metroplex (voice)

Superman (voice)

Superman and Bizarro (Voice)

Asmodeus / Mortifer / Farmer Morgan (voice)

Self

Sgt. Forge

Superman (voice)

Big Bad Wolf / Eager Young Wolf / Dash Hammet / Wolf Guard (voic

Cyclops (voice) (archive footage)

David (voice)

Leader

Yule Tide / Lee Dingman / Movie Harold / Movie Santa (voice)

Marcus Octavius (voice)

Yusuf (voice)

Kraang (voice)

Charlie

Jim Prescott / Conductor (voice)

Alfred (voice) / Killer Croc (voice)

Hex (voice)

Lee Dingman / Hugo Mouthingwad (voice)

Reporter #1 / Reporter #2 / Reporter #4 (voice)

The Kraang (voice)

Weasel 1 / Cool Smooth Wolf (voice)

Cyclops

Roach / Kyo / Master Shen (voice)