Magic School Bus/Little Einsteins

Version 1

 * Arnold as Leo (both wears glasses)
 * Wanda as June (both has a crush on Arnold and Leo)
 * Carlos as Quincy (both like Arnold, Leo, Wanda and June)
 * Dorothy Ann as Annie (both has blond hair)
 * Snuffy (from Sesame Street) as Rocket

Version 2

 * Arnold as Leo
 * Wanda as June
 * Tim as Quincy
 * Phoebe as Annie