All right, I know what you're all thinking: Wasn't this done before? Yeah, it was, but two things went wrong with both versions I've seen: The first one kept getting moved and eventually, no one could seem to finish that one (Kingdom Hearts: the Cartoon Network Version). The second one was going well, but he gave up on writing fanfics too soon (Kingdom Cartoon Network). Well, I've decided to do my own version of Kingdom Hearts with Cartoon Network characters (this includes movies & shows that have played there before). So far, here are the cast that I have for the first one:

Misty's Birth by Sleep:
Worlds: Shows
Sunset Horizon: Planet CN (Fusionfall)
Snow White's House: Coolsville (Scooby Doo)
Castle of Dreams: Grand Line (One Piece)
Enchanted Dominion: New York (An American Tail)

Characters: CN Crew
Terra: Brock (Pokemon)
Aqua: Ash (Pokemon)
Ven: Misty (Pokemon)
Jaq: Usopp
Lucifer: Don Krieg
Xenahort's Apprentice: Lalavava

Sailor Moon's Kingdom CN:
Worlds: Shows
Destiny Island: Townsville (Sailor Moon Toon) (Sailor Moon with Courage, PPGs, and Naruto mixed in)
Disney Castle: Camp Kidney (Camp Lazlo)
Traverse Town: Toonami City (named after Toonami)
Wonderland: Kingdom of Wisdom (Phantom Tollbooth)
Deep Jungle: Furious Jungle (George of the Jungle)
Olympus Coliseum: Xiaolin Temple (Xiaolin Showdown)
100 Acre Wood: Dillydale (The Mr. Men Show)
Agrahbah: Masaki Temple (Tenchi Muyo)
Monstro: Cinimini's Strawberry Home (Chowder)
Halloween Town: Cleveland (Kids Next Door)
Atlantica: Orchid Bay (Juniper Lee)
Neverland: Third Earth (Thundercats)
Hollow Bastion: Adultopolis (named after Adult Swim)
End of the World: Cancellation Universe (named after what happens to CN shows)

Characters: CN Crew
Sora: Serena/Sailor Moon (I'm use to the Inners' dub names by now)
Riku: Raye/Sailor Mars
Kairi: Darian/Tuxedo Mask
Tidus: Naruto
Wakka: Sasuke
Selphine: Sakura
Mickey: Lazlo
Donald: Edward
Goofy: Raj & Clam (reason is Clam only has few words per sentence)
Minnie: Patsy
Daisy: Nina & Gretchen
Chip n' Dale: Chip & Skip
Pluto: Samson
Huey, Dewey, & Louie: Milt, Dave, and Ping-Pong
Leon: Samurai Jack
Yuffie: Ben Tennyson
Cid: Argit
Aerith: Kevin Levin
Cloud: Gwen Tennyson
Sephiroth: Morningstar/Darkstar
101 Dalmatians: My Gym Partner's a Monkey Cast
Alice: Milo
Cheshire Cat: Tock & Humbug
White Rabbit: Spelling Bee
Queen of Hearts: Officer Short Shrift
Hercules: Omi
Phil: Master Fung & Dojo
Hades: Chase Young
Tarzan: George
Jane: Ursula
Terk: Shep
Kerchak: Ape
Kala: Magnolia
Clayton: Lyle
Simba: Dexter Douglas/Freakazoid
Dumbo: Yogi's Ark
Bambi: Hamtaro
Mushu: Bloo
Pooh: Mr. Tickle
Piglet: Mr. Nervous
Rabbit: Mr. Persnickety
Tigger: Mr. Messy
Eeyore: Little Miss Calamity
Roo: Mr. Bounce
Owl: Mr. Small & Mr. Nosy
Aladdin: Ryoko & Ayeka
Jasmine: Tenchi
Jafar: Kagato
Iago: Misao/Pixy Misa
Abu: Ryo-Ohki
Carpet: Mihoshi
Genie: Sasami/Pretty Sammy
Monstro: Cinemini Monster (and his home)
Pinnochio: Chowder
Jiminy Cricket: Gazpacho
Gepetto: Mung Daal & Truffles
Ariel: Juniper Lee
King Triton: Ah-Mah
Flounder: Ray-Ray
Sebastian: Monroe
Ursula: Kai Yee
UPDATE: Flotsam & Jetsam: Replica Copies of June's Friends
Jack Skellington: Numbah 4
Sally: Numbah 3
Dr. Finklestein: Numbah 2
Mayor: Numbah 1 & 5
Lock, Shock, & Barrel: Delightful Children
Oogie Boogie: Father
Peter Pan: Cheetara
Captain Hook: Slythe
Smee: Monkian & Jackelman
Wendy: Lion-O
Tinker Bell: Wilykit & Wilykat
Belle: Anakin
Beast: Ahsoka
Maleficent: Warren T. Cat
Aurora: Fievel
Snow White: Scooby Doo
Cinderella: Monkey D. Luffy
Fairy Godmother: Nico Robin
Merlin: Wallace & Gromit
Ansem/Xenahort: Mandark

Sailor Moon's Castle of Links:
World: Show
Castle Oblivion: Cartoon Network Studios
Twilight Town: Wakanaka Island (Total Drama Island)

Characters: CN Crew:
Axel: The Mouse King (Nutcracker Prince)
Marluxia: Slade (Teen Titans)
Larxene: Witch Hazel (Looney Tunes)
Vexen: Boogie Man (Grim Adventures of Billy & Mandy)
Zexion: Le Quack (Courage the Cowardly Dog)
Lexeaus: Arnold the Pit Bull (Tiny Toon Adventures)
DiZ: Dexter (Dexter's Laboratory)
Namine: Trent
Roxas: Gwen

Gwen's 358/2 Days:
Characters: CN Crew:
Xion: Tsukasa (.hack//SIGN)

Sailor Moon's Kingdom CN 2:
World: Show
Radiant Garden: Burbank (named after the Animaniacs Home)
Land of the Dragons: Fosters Home for Imaginary Friends (Fosters Home for Imaginary Friends)
Port Royal: Battle City (Yu-Gi-Oh!)
Beast's Castle: Corusant (Star Wars (this counts since its spinoffs were shown))
Pride Lands: Freakacity (Freakazoid!)
Space Paranoids: Vestroia (Bakugan)
World That Never Was: Frivoli (Twice Upon a Time)

Characters: CN Crew:
Yen Sid: Commander Hoo Haw
Pete: Lumpus
Scrooge: Slinkman
Flora: Tanya
Fauna: Bridgette
Merryweather: Tony
Hayner: Duncan
Pence: Geoff
Olette: Bridgette & Courtney (Hey, Duncan's gotta have someone like Courtney)
Seifer: Heather
Rai: Eva
Fuu: Justin
Vivi: Izzy
Setzer: Chris
Tifa: Julie Yamamoto
Nala: Stephanie
Banzai, Shenzi, & Ed: The Lobe, Cave Guy, & Cobra Queen
Scar: Guiterrez
Timon & Pumbaa: Cosgrove & Professor Jones
Ping/Mulan: Mac
Li Shang: Frankie
Ling: Wilt
Yao: Coco
Chien-Po: Eduardo
Emperor: Madam Foster
Shan Yu: Terrence & Duchess
Jack Sparrow: Seto Kaiba
Will Turner: Yugi/Yami Yugi
Elizabeth Swann: Tea
Barbossa: Yami Bakura
Tron: Dan & Drago
Commander Sark: Masquerade
MCP: Naga
Meg: Kimiko
Pegasus: Raimundo & Clay
Eric: Marcus
Beast's Servants: Jedi
Beggar: Washu
Stitch: Taz the Tazmanian Devil
Luxord: Yami Marik (Yugioh)
Demyx: Team Galactic Member Cyrus (Pokemon)
Xemnas: Overlord Mandark (Dexter's Laboratory: Ego Trip)
Xaldin: General Skarr (Grim & Evil/Underfist)
Xigbar: Count Dooku (Star Wars)
Saix: Montana Max (Tiny Toon Adventures)

Extras:
Amy/Sailor Mercury (Sailor Moon) (with Sailor Moon)
Lita/Sailor Jupiter (Sailor Moon) (with Sailor Moon)
Mina/Sailor Venus (Sailor Moon) (with Sailor Moon)
Vultureman (Thundercats)
other Thundercats
The Mr. Men & Little Misses
Schnitzel (Chowder)
Panini (Chowder)
Dee Dee (Dexter's Laboratory)
Mr. Herriman (Foster's Home for Imaginary Friends)
Total Drama Island Contestants
Chef as the announcer (Total Drama Island)

Unknown Roles for Other shows:
Powerpuff Girls
Courage the Cowardly Dog
Garfield
UPDATE: Family Guy
UPDATE: Aqua Teen Hunger Force
UPDATE: Zatch Bell