Little Einsteins/Arthur

Version 1

 * Leo as Arthur
 * Melody The Music Pet as D.W
 * Baby Leo as Kate
 * Rocket as David Read
 * Rocket's Grandma as Jane Read
 * June's Grandpa as Grandpa Dave
 * Edward (from TTTE) as Francine's Dad
 * The Good Knight as Mr. Ratburn
 * Molly (from TTTE) as Francine's Mom
 * Nathan as Tommy Tibble
 * David as Timmy Tibble
 * Joey Kangaroo as George
 * Quincy as Buster
 * Little Mouse as Binky
 * Big Jet as Rattles

Version 2

 * Leo as Arthur
 * Melody The Music Pet as D.W
 * Baby Leo as Kate
 * Goose's Dad as Mr. Read
 * Goose's Mom as Mrs. Read
 * Baby Golden Goose as Pal
 * June as Francine
 * Annie as Muffy
 * The Good Knight as Ed Crosswire
 * Rocket as Mr. Ratburn
 * June's Grandpa as Grandpa Dave
 * Little Mouse as Mr. Marco
 * Nathan as Toby
 * David as Slink
 * Little Red Train as George
 * Quincy as Buster
 * Joey Kangaroo as Binky
 * Big Jet as Rattles