Tara Strong as Timmy / Baby Poof / Computer Voice (voice)

Susanne Blakeslee as Wanda / Mom (voice)

Daran Norris as Cosmo / Dad / Jorgen (voice)

Eric Bauza as Foop / Cyclops / Fairy Bailiff (voice)

Carlos Alazraqui as Crocker / Mrs. Crocker / Fairy Elder #3 / Gnome (voice)

Jeff Bennett as Fairy Elder #1 / Father Time / Big Willy (voice)

Grey DeLisle as Vicki (voice)

Gary LeRoi Gray as A.J. (voice)

Jay Leno as Crimson Chin (voice)

Jason Marsden as Chester (voice)

Rob Paulsen as Mark Chang (voice)

Kevin Michael Richardson as Fairy Elder #2 / Dark Laser (voice)

Jim Ward as Chet Ubetcha (voice)