Mickey, Pooh and Elmo's Letter Adventure

Mickey, Pooh and Elmo's Letter Adventure was a crossover in Cel Animation.

Plot

 * Elmo joins, Mickey, Pooh and the others for levels hosted by Grover, Big Bird, and Ernie.

The Conductors of Shining Time Station US

 * 1) Mr. Conductor 1 (Ringo Starr)
 * 2) Mr. Conductor 2 (Alec Baldwin)
 * 3) Mr. Conductor 3 (Michael Brandon)

Disney Mascots

 * 1) Mickey Mouse (Bret Iwan)
 * 2) Winnie the Pooh (Jim Cummings)

From Sesame Street

 * 1) Elmo (
 * 2) Grover (
 * 3) Big Bird (
 * 4) Ernie (

Kids for Character Stars and Other Appearances

 * 1) Julie Woo (Alice Dinnean)
 * 2) Barney (Dean Wendt)
 * 3) Fiona Frizzle (Kate McKinnon)
 * 4) Lamb Chop (???)
 * 5) Binyah Binyah Polliwog (Justin Campbell)
 * 6) Babar and Badou (Gordon Pinsent and William Healy)
 * 7) The Cat in the Hat (Martin Short)
 * 8) Fred Flintsone and Barney Rubble (James Arnold Taylor and Kevin Michael Richardson)
 * 9) Garfield (Frank Welker)
 * 10) George Jetson and Cosmo Spacely (Jeff Bergman)
 * 11) Kino of Storytime (???)
 * 12) Madeline (Andrea Libman)
 * 13) Ronald McDonald (David Hussey)
 * 14) Peter Rabbit (L. Parker Lucas)
 * 15) Scooby-Doo and Shaggy Rogers (Frank Welker and Matthew Lillard)
 * 16) Spot the Dog (???)
 * 17) Woody Woodpecker (Eric Bauza)
 * 18) Yogi and Boo Boo Bear (Jeff Bergman)

Friends to Barney

 * 1) Sandra Larson (Lisa Ortiz)
 * 2) Penny Crygor (Stephanie Morgenstern)
 * 3) Ash Ketchum and Pikachu (Sarah Natochenny and Ikue Ohtani)
 * 4) Mary and Togepi (Suzy Myers and Satomi Korogi)
 * 5) Nelly Marcos and Baby Mayra (Lisa Ortiz and Kayzie Rogers)
 * 6) Felicia and Tawny McCoy (Lisa Ortiz and Tara Jayne)

Puzzle League Opponents

 * 1) Gary Oak (Jimmy Zoppi)
 * 2) Brock (Bill Rogers)
 * 3) Misty with Daisy, Violet and Lily (Michele Knotz, Lisa Ortiz, Jessica Paquet and Haven Paschall)
 * 4) Lieutenant Surge (Jimmy Zoppi)
 * 5) Erika (Nathalie Gorham)
 * 6) Koga with Aya (Jimmy Zoppi and Lisa Ortiz)
 * 7) Sabrina (Lisa Ortiz)
 * 8) Blaine with Reiko (Craig Blair and Emily Jenness)
 * 9) Tracey Sketchit (Craig Blair)
 * 10) Jessie, James, Meowth, Wobbuffet and Giovanni (Michele Knotz, Jimmy Zoppi, Erica Schroeder and Craig Blair)
 * 11) Ritchie and Florinda Showers (Sarah Natochenny and Emily Jenness)
 * 12) Prima (Marissa Kennedy)
 * 13) Bruno (Jimmy Zoppi)
 * 14) Cissy with Senta, A.J. and Timmy (Emily Jenness, Erica Schroeder, Jimmy Zoppi and Michele Knotz)
 * 15) Danny (Michael Lockwood Crouch)
 * 16) Rudy and Mahri (Wayne Grayson and Suzy Myers)
 * 17) Luana (Sarah Natochenny)
 * 18) Drake (Marc Thompson)
 * 19) Falkner (Wayne Grayson)
 * 20) Bugsy (Cristina Valenzuela)
 * 21) Whitney and Tierra (Sarah Williams and Emily Jenness)
 * 22) Morty and Eusine (Wayne Grayson and Craig Blair)
 * 23) Jasmine, Janina and Myron (Alyson Leigh Rosenfeld, Suzy Myers and Jimmy Zoppi)
 * 24) Pryce and Sheila (Jimmy Zoppi and Sarah Natochenny)
 * 25) Clair, Liza and Lance (Eva Christensen, Lisa Ortiz and Wayne Grayson)
 * 26) Damian (Eli Jay)
 * 27) Alexander Davis (Michele Knotz)
 * 28) Koji (Craig Blair)
 * 29) Ken and Mary (Marc Thompson and Caroline Hellman)
 * 30) Casey (Suzy Myers)
 * 31) Harrison (Wayne Grayson)
 * 32) Macy (Suzy Myers)
 * 33) Vincent Jackson (Wayne Grayson)

Traveler Companions to Ash and Mary

 * 1) May and Max (Michele Knotz)
 * 2) Dawn (
 * 3) Iris (
 * 4) Cilan, Chili and Cress (
 * 5) Serena (
 * 6) Clemont and Bonnie (
 * 7) Lillie (
 * 8) Gladion (
 * 9) Mallow (
 * 10) Kiawe (
 * 11) Lana (
 * 12) Sophocles (

Thomas Stories

 * 1) Thomas Gets Tricked (Ringo
 * 2) Edward Helps Out (
 * 3) Salty's Secret (Alec
 * 4) Harvey To The Rescue (
 * 5) Emily's New Coaches (Michael
 * 6) Percy Gets It Right (

Songs

 * 1) Sesame Street theme (calypso opening)

Trivia

 * A Sesame Street game made into a home video.
 * Most traveler companions from different regions appear.
 * Serena has her short hairstyle and new outfit since A Showcase Debut.
 * Ringo, Alec and Michael audio for each Thomas Story: from ???, ??? and ???.
 * Emily's New Coaches and Percy Gets It Right both use the ??? Series music.

Script

 * (Our home video opens with a Calypso version of the show's theme)
 * Children: Sunny day,