The Fairly OddParents/Fanboy and Chum Chum

Version 1

 * Timmy Turner as Fanboy
 * Chester McBadbat as Chum Chum
 * Trixie Tang as Yo
 * Tootie as Lupe (both have black hair)
 * AJ as Kyle Bloodworth-Thomason
 * Sanjay as Sigmund The Sorcerer
 * Mr. Turner as Oz Harmounian
 * Mrs. Turner as Cher Leader
 * Veronica as Nancy Pancy
 * Pepe (Jet Boots) as Michael Johnson
 * Winston Dunsworth as Duke
 * Vicky as Francine
 * Princess Mandie as Marsha
 * The Mayor Of Dimmsdale as Fedora Man
 * Mechanic as Agent Johnson
 * Crash Nebula as Man-Arctica
 * PC Mackintosh (from Wallace and Gromit) as Mr. Hank Mufflin
 * Sam Sleaze (from Follow That Bird) as Lenny Flynn-Boyle
 * Sid Sleaze (from Follow That Bird) as Boog Shlizetti
 * Fat Timmy Turner (Just Desserts) as Yum Yum
 * Hamster as Precious Pig

Version 2

 * Timmy Turner as Fanboy
 * Chester as Chum Chum
 * Trixie Tang as Yo
 * Mrs. Turner as Lupe
 * A.J. as Kyle Bloodworth-Thomason
 * Elmer Boyle as Sigmund The Sorcerer
 * Cosmo as Oz Harmounian
 * Wanda as Cher Leader
 * Tootie as Nancy Pancy
 * Pepe (Jet Boots) as Michael Johnson
 * Winston Dunsworth as Duke
 * Baljeet Tjinder (from Phineas and Ferb) as FanKyleChum
 * Fat Mr. turner (Just Desserts) as Chris Chuggy
 * Vicky as Francine
 * Princess Mandie as Marsha
 * The Mayor of Dimmsdale as Fedora Man
 * PC Mackintosh (from Wallace and Gromit) as Mr. Hank Mufflin
 * Bucky McBadbat as Agent Johnson
 * April McBadbat as Nurse Lady Pam
 * Mr. Turner as Fedora Man
 * Crash Nebula as Man-Arctica
 * Sam Sleaze (from Follow That Bird) as Lenny Flynn Boyle
 * Sid Sleaze (from Follow That Bird) as Boog Schlizetti
 * Fat Timmy Turner (Just Desserts) as Yum Yum
 * Hamster as Precious Pig

(Female Characters)

 * Trixie as Fanboy
 * Tootie as Chum Chum
 * Timmy as Yo
 * Veronica as Kyle The Conjurer
 * Vicky as Sigmund The Sorcerer

Version 3

 * Timmy Turner as Yo (I Know Timmy Turner is Male)
 * The Mayor Of Dimmsdale as Oz's Mom (I Know The Mayor Of Dimmsdale is Male)
 * Trixie Tang as Fanboy (I Know Trixie Tang is Female)
 * Mr. Turner as Madame LaVache/Ms. Olive (I Know Mr. Turner is Male)
 * Mrs. Turner as Duke (I Know Mrs. Turner is Female)
 * A.J. as Cher Leader (I Know A.J. is Male)
 * PC Mackintosh (from Wallace and Gromit) as Nurse Lady Pam (I Know PC Mackintosh is Male)
 * Pepe (Jet Boots) as Lupe (I Know Pepe is Male)
 * Veronica as Chum Chum (I Know Veronica is Female)
 * Chester McBadbat as Nancy Pancy (I Know Chester McBadbat is Male)
 * Vicky as Sigmund The Sorcerer (I Know Vicky is Female)
 * Tootie as Kyle Bloodworth-Thomason (I Know Tootie is Female)
 * Sam Sleaze (from Follow That Bird) as Lunch Lady Cram (I Know Sam Sleaze is Male)
 * Sid Sleaze (from Follow That Bird) as Francine (I Know Sid Sleaze is Male)