- Sora (Haley Joel Osment) - The key that connects everything. The Leader of the 7 Lights
- Riku (David Gallagher) - The fallen friend who's finally achieved redemption through becominbg a Keyblade Master. One of the 7 Guardians of Light.
- Kairi (Hayden Panettiere) - The true love that will not let worlds keep them apart. One of the 7 Lights.
- Donald (Tony Anselmo) - The short tempered royal magician.
- Goofy (Bill Farmer) - The simple minded captain of the royal knights.
- King Mickey (Bret Iwan) - The once and future king who carries the burden of the universe on his shoulders. One of the 7 Lights.
- Aqua (Willa Holland) - One of the 7 Lights.
- Terra (Jason Dohring) - One of the supposed 7 Lights who was turned into Xehanort's 6th Vessel.
- Ventus (Jesse McCartney) - One of the 7 Lights.
- Lea (Quinton Flynn) - The newest keyblade wielder and his nobody Axel was a former member of Organization XIII. One of the 7 Lights.
- Elena - The reconstructed somebody of Larxene, former member of the original Organization XIII. Looking to redeem herself for all of the suffering she caused in her madness, fights by Lea's side against the Nu Organization's forces.
- Ansem the Wise (Corey Burton) - The scientest supreme whose looking to correct the consequences of his experiments.
- Max Goof (Jason Marsden) - A paladin in training, trying to step out of his father's shadow.
- Chip 'n' Dale (Tress MacNeille and Corey Burton) - Extraordinary spaceflight engineers, who don't let their size hold back their genius designs.
- Jiminy Cricket (Phil Snyder) - The conscience and scribe of world traveling heroes.
- Pluto - The king's loyal canine, who always ends up in the wrong place at the wrong time.
- P.J. (Rob Paulsen)
Disney Party Members
- Jane Darling (Harriet Owen) - Only world in Neverland.
- Stitch (Chris Sanders) - Only world in Hawaii.
- Milo Thatch (James Arnold Taylor) - Only world in Atlantis.
- Hercules (Tate Donovan) - Only world in Olympus Coliseum.
- Quasimodo (Ari Rubin) - Only world in La Cite Des Cloches.
- Pongo (Tom Kane) - Only world in Dalmatian London.
- Aladdin (Scott Weinger) - Only world in Agrabah.
- Tiana (Anika Noni Rose) - Only world in New Orleans.
- Kuzco (David Spade) - Only world in Kuzcotopia.
- Melody (Tara Strong) - Only world in Atlantica.
- Jim Hawkins (Joseph Gordon-Levitt) - Only world in Treasure Planet.
- Oliver (E. G. Daily) - Only world in New York City.
- Bob Parr/Mr. Incredible (Craig T. Nelson) - Only world in Metroville.
- Jack Sparrow (Johnny Depp) - Only world in Port Royal.
- Wreck-It Ralph (John C. Reilly) - Only world in Game Central Station.
- Kiara (Tara Strong) - Only world in Pride Lands.
- Bernard (Curt Menefee) - Only world in City of Rescuers.
- Winnie the Pooh (Jim Cummings) - Only world in The Hundred Acre Wood.
- Peter Pan (Blayne Weaver)
- Tinker Bell
- The Octopus
- Lilo (Tara Strong)
- Nani (Tia Carrere)
- Dr. Jumba Jookida (David Ogden Stiers)
- Pleakley (Kevin McDonald)
- Kida (Candi Milo)
- Vincenzo (Don Novello)
- Audrey (Jacqueline Obradors)
- Gaetan (Corey Burton)
- Philoctetes (Danny DeVito)
- Megara (Susan Egan)
- Pegasus (Frank Welker)
- Zeus (Corey Burton)
La Cite Des Cloches
- Esmeralda (Renee Faia)
- Captain Phoebus (Phil LaMarr)
- Clopin (Paul Kandel)
- Hugo (Jason Alexander)
- Victor (Charles Kimbrough)
- Laverne (Patricia Lentz)
- Perdita (Kath Soucie)
- 99 Puppies
- Colonel (Jim Cummings)
- Segeant Tibbs (Tom Kenny)
- Captain (Will Ryan)
- Jasmine (Linda Larkin)
- Genie (Dan Castellaneta)
- Abu (Frank Welker)
- Iago (Gilbert Gottfried)
- Cassim (John Rhys-Davies)
- The Sultan (TBA)
- Razoul (TBA)
- The Peddler (Corey Burton)
- Prince Naveen (Bruno Campos)
- Ray (Jim Cummings)
- Louis (Michael-Leon Wooley)
- Charlotte (Jennifer Cody)
- Pacha (John Goodman)
- Kronk (Patrick Warburton)
- Chicha (Wendie Mallck)
- Tipo (TBA)
- Chaca (TBA)
- Ariel (Jodi Benson)
- Prince Eric (Christopher Daniel Barnes)
- Flounder (Cam Clarke)
- Sebastian (Kevin Michael Richardson)
- King Triton (Corey Burton)
- Tip (Max Casella)
- Dash (Stephen Furst)
- John Silver (Brian Murray)
- B.E.N. (Martin Short)
- Morph (Dane A. Davis)
- Dr. Delbert Doppler (David Hyde Pierce)
- Captain Amelia (Emma Thompson)
New York City
- Dodger (Jess Harnell)
- Rita (Sheryl Lee Ralph)
- Tito (Cheech Marin)
- Francis (Kelsey Grammer)
- Einstein (John DeSantis)
- Fagin (Tino Insana)
- Jenny Foxworth (Natalie Gregory)
- Georgette (Bette Midler)
- Winston (TBA)
- Helen Parr/Mrs. Incredible (Holly Hunter)
- Violet Parr (Sarah Vowell)
- Dash Parr (E. G. Daily)
- Frozone (Samuel L. Jackson)
- Edna Mode (TBA)
- Will Turner (Crispin Freeman)
- Elizabeth Swann (Eliza Schneider)
- Hector Barbossa (Geoffrey Rush)
- Bootstrap Bill Turner (Mark Hamill)
Game Central Station
- Vanellope Von Schweetz (Sarah Silverman)
- Fix-it Relix, Jr. (Jack McBrayer)
- Segeant Colhoun (Jane Lynch)
- Sonic the Hedgehog (Roger Craig Smith)
- M. Bison (TBA)
- Zangief (TBA)
- Simba (Cam Clarke)
- Nala (Vanessa Marshall)
- Timon (Bruce Lanoil)
- Pumbaa (Ernie Sabella)
- Zazu (Rowan Atkinson)
- Kovu (Jason Marsden)
City of Rescuers
- Miss Bianca (Russi Taylor)
- Chairmouse (Bernard Fox)
- Orville (Tom Kenny)
- Penny (Tara Strong)
- Ellie Mae (Russi Taylor)
- Luke (Bill Farmer)
- Wilbur (Jeff Bennett)
- Jake (Tristan Rogers)
- Cody (Adam Ryen)
- Marahute (Frank Welker)
The Hundred Acre Wood
- Tigger (Jim Cummings)
- Piglet (Travis Oates)
- Rabbit (Tom Kenny)
- Eeyore (Bud Luckey)
- Kanga (Kristen Anderson-Lopez)
- Roo (Wyatt Dean Hall)
- Owl (Craig Ferguson)
- Christopher Robin (Jack Boulter)
- The Horned King (John Hurt) - The first demon, an agent of chaos that was born long ago in darkness, he holds control over all the Heartless and will not stop until he finds the Black Cauldron, which can turn any corpse dipped into it into an invincible zombie in hopes of taking over all worlds.
- Master Xehanort (Leonard Nimoy) - The dark keyblade master longing to obtain the power of Kingdom Hearts, but his quest to do so has been the cause for all the misery and devastation in the worlds for decades. His plan to restart the Keyblade War with his 13 darknesses has been helped along by his ally, the Horned King.
- Young Xehanort (Benjamin Diskin) - The younger incarnation of Xehanort that has come from the past to join his current self, Young Xehanort is a deadly opponent who's powers over time and space have allowed him to recruit many villains towards the Horned King's goal.
- Ansem, Seeker of Darkness (Billy Zane) - Xehanort's heartless who once faced off against the keybearers, he was ultimately revived by Young Xehanort to join Master Xehanort's new Organization XIII.
- Xemnas (Paul St. Peter) - Xehanort's nobody who once tried to create his own Kingdom Hearts from the hearts of slain Heartless in order to become a god, Xemnas has been revived from the darkness by the Unknown to join the new Organization XIII.
- Vanitas (Haley Joel Osment) - One of Xehanort's early monstrosities, he is a being of raw energy, and thrives on negative emotions to survive and create twisted minions called the "Unversed". Although he was destroyed many years ago by his good half, Ventus, Xehanort managed to revive the Unversed commander as a Sentiment to go alongside Xigbar in recruiting villains to their alliance, as well as become the 13th member of the new Organization XIII.
- Xigbar (James Patrick Stewart) - Xehanort's old minion who has been resurrected in the form of his Nobody to aid his master in recruiting an army of villains for use in conquering the realm of light. He may seem like a surfer dude, but he's very dangerous and not to be messed with, especially since he's already starting to mutate into one of Xehanort's 13 darkness clones.
- Isa (Kirk Thornton) - Lea's old friend has been corurpted fully to the darkness, and he remains loyal to his master, Xemnas, in the Syndicate/Nu Organization alliance's efforts to restart the Keyblade War. But can Lea break Isa free from Xehanort's control, or will Saix fully become just another clone of the dark lord?
- Terra-Xehanort (Richard Epcar/Jason Dohring)
- Riku Replica (David Gallagher)
The Alliance of Villain's Vale
- Maleficent (Susan Blakeslee) - The Mistress of All Evil, she is a cruel and insidious witch that will stop at nothing to reek her vengeance upon Sora.
- Pete (Jim Cummings) - Maleficent's loyal underling is still loyal to her no matter what, but now Pete's leading a sort of team of weak villains to help the rest of Maleficent's allies take over their worlds.
Villains Vale Members
- Captain Hook (Corey Burton) - The main antagonist of 2002 film, Peter Pan: Return to Never Land, sequel to 1953 film, Peter Pan.
- Gantu (Kevin Michael Richardson) - The main antagonist of 2002 film, Lilo & Stitch.
- Commander Rourke (Hugo Weaving) - The main antagonist of 2001 film, Atlantis: The Lost Empire.
- Hades (James Woods) - The main antagonist of 1997 film, Hercules.
- Judge Claude Frollo (Corey Burton) - The main antagonist of 1996 film, The Hunchback of Notre Dame.
- Cruella De Vil (Susan Blakeslee) - The main antagonist of 1961 film, 101 Dalmatians.
- Sa'Luk (Jeff Bennett) - The main antagonist of 1996 film, Aladdin and the King of Thieves, sequel to 1992 film, Aladdin and 1994 film, The Return of Jafar.
- Jafar's Renmant (Jonathan Freeman) - The second visit to Agrabah.
- Dr. Facilier (Keith David) - The main antagonist of 2009 film, The Princess and the Frog.
- Yzma (Candi Milo) - The main antagonist of 2000 film, The Emperor's New Groove.
- Morgana (April Winchell) - The main antagonist of 2000 film, The Little Mermaid II: Return to the Sea, sequel to 1989 film, The Little Mermaid.
- Ursula's Renmant (April Winchell) - The second visit to Atlantica.
- Scroop (Michael Wincott) - The true main antagonist of 2002 film, Treasure Planet.
- Sykes (Rober Loggia) - The main antagonist of 1988 film, Oliver & Company.
- Syndrome (Jason Lee) - The main antagonist of 2004 Pixar film, The Incredibles.
- Davy Jones (Bill Nighy) - The main antagonist of 2006 live-action film, Pirates of the Caribbean: Dead Man's Chest, sequel to 2003 film, Pirates of the Caribbean: The Curse of the Black Pearl.
- King Candy (Alan Tudyk) - The main antagonist of 2012 film, Wreck-It Ralph.
- Zira (Nana Visitor) - The main antagonist of 1998 film, The Lion King 2: Simba's Pride, sequel to The Lion King.
- Madame Medusa (Tress MacNeille) - The main antagonist of 1977 film, The Rescuers.
- Percival C. McLeach (Jonathan Freeman) - The second visit to City of Rescuers and the main antagonist of 1990 film, The Rescuers Down Under, sequel to 1977 film, The Rescuers.
- The Backson (Nolan North) - The main antagonist of 2011 film, Winnie the Pooh.
The Great Demon Lords/Juubi No Yami
Although Master Xehanort and his new Organization XIII have all been destroyed by Sora and his friends, what our heroes don't realize that the Horned King has survived his destruction from the Black Cauldron, and has now begun enacting the true plan that he has kept secret from Xehanort all this time...the ultimate destruction of the multiverse with the power of the X-blade and the dark lord, Chernabog!
- Chernabog (Corey Burton) - The Demon Lord of all darkness, the Chernabog that Sora fought begore was merely just a Heartless created in his image by Xehanort. This creature is the real deal, and he's not happy for getting sealed away on Bald Mountain for 10,000 years.
- The Firebird (Hugo Weaving) - One of the original Juubi No Yami that fought during the War of Light, Firebird is Chernabog's elite second in command of the Demon Lords who takes the form of a massive bird made out of molten lava.