The Great Discovery (reboot)

Characters

 * D.B. Sweeney as Thomas
 * Joaquin Phoenix as Edward
 * Patrick Dempsey as Henry
 * Corey Burton as Gordon
 * Alan Tudyk as James
 * Kath Soucie as Percy
 * Christopher Plummer as Toby
 * Jeff Bennett as Harvey
 * Wanda Sykes as Emily
 * Rob Paulsen as Arthur
 * Jim Cummings as Skarloey
 * John Goodman as Rheneas
 * Nathan Lane as Sir Handel
 * George Takei as Duncan
 * Ed Harris and Alan Cumming as Mighty Mac
 * Jon Voight as Freddie
 * Denzel Washington as Harold
 * Nathan Fillion as Cranky
 * Adam Baldwin as Jack
 * Jerry Stiller as Alfie
 * Rip Torn as Oliver
 * Chris Parnell as Ned
 * John C. Reilly as Buster
 * Tara Strong as Madge
 * Dan Castellaneta as Sir Topham Hatt
 * Tress MacNeille as Lady Hatt
 * Sarah Silverman as Madge
 * Jane Lynch as Miss Jenny
 * Jack McBrayer as Mr. Percival
 * Dylan O'Brien as Bill
 * Thomas Brodie-Sangster as Ben
 * Jane Levy as Molly
 * Kath Soucie as Mavis
 * Jaleel White as Salty
 * Maurice LaMarche as Peter Sam
 * Tom Kenny as Rusty
 * Julie Andrews as Annie
 * Helen Mirren as Clarabel
 * Scott Menville as Rocky
 * Jack Riley as Terence
 * Michael Bell as Bertie
 * Billy West as Trevor
 * Danny DeVtio as Max
 * Wayne Knight as Monty
 * Phil LaMarr as Jeremy
 * Roger L. Jackson as Sodor Brass Band
 * Ed Asner as The Mayor of Sodor
 * Janice Kawaye as Rosie
 * Daran Norris as Whiff
 * James Arnold Taylor as Diesel
 * Khary Payton as Arry
 * Greg Cipes as Bert
 * Will Ryan as Diesel 10
 * David Arquette as Dennis
 * Carlos Alazraqui as George
 * Danny Jacobs as Butch
 * Cheryl Chase as Elizabeth
 * Shaun Fleming as Stephen Hatt
 * Madison Pettis as Bridget Hatt
 * Barry Gordon as Jem Cole
 * Candi Milo as Refreshment Lady
 * Townsend Coleman as Cyril the Fogman
 * Seth Green as Lord Callan
 * Kelly Hu as The Storyteller
 * Jess Harnell as Kuffy the Clown
 * Martin Short as The Dairy Manager
 * Jeffery Garcia and Carolyn Lawrence as Two members of the Railway Board
 * Megan Cavanagh as Henrietta
 * David Kaufman as Kelly
 * Grey DeLisle-Griffin as Alicia Botti
 * Mark DeCarlo as Duck

Character Introduced

 * Will Friedle as Stanley