Krypto as Figaro
Lex Luthor as Stromboli
Conner Kent as Pinocchio
Raven as Sophia
Shayera as the Blue Fairy
Arella as Sophia's parent
John Stewart as Lezarno
Professor Hamilton as Professor Buonrigazzo
Red Hood/Jason Todd as Pleasure Island Ringmaster
Geppetto's character is split in two, Clark and Lois.
Raven's character, Sophia, is made more prominent and instead of having a father, she has a mother. She's also more well behaved than most of the other children.
Also, it's revealed that Conner and Raven end up together with a child named Kara and Conner works for his parents as a toy designer.
Clark and Lois Kent: http://www.fanfiction.net/s/6380098/1/Clark_and_Lois_Kent