The Fairly OddParents/Foster's Home for Imaginary Friends

Cast

 * Timmy Turner as Mac
 * Cosmo as Bloo (both names end with "o")
 * Veronica as Frankie Foster (they both are voiced by Grey DeLisle and have the same hairstyle)
 * AJ as Eduardo
 * Wanda as Coco
 * Sanjay as Wilt
 * Poof as Cheese
 * Francis as Terrence
 * Jorgen Von Strangle as Mr. Herriman
 * Principal Waxelplax as Madame Foster
 * Vicky as Duchess (they both are considered morbid and are voiced by Grey DeLisle)
 * Tootie as Goo