This article is rated G, meaning it is appropriate for all ages.
- The Narrator: An old-aged Tommy Tinkerton.
- Tom Cat: A grayish-blue cat who wears a medium-dark teal sweater, a purple scarf, blue mittens, dark eggplant purple boots and Tommy Tinkerton's pet cat.
- Jerry Mouse: A brown mouse who wears a red sweater, white scarf, shoes and mittens with red polka dots and Tommy Tinkerton's pet mouse.
- Nibbles "Tuffy" Mouse: A light-grey mouse who wears a forest green sweater, his several emerald green winter clothes and white diaper. Jerry's nephew, Muscles' little cousin and Tommy Tinkerton's pet baby mouse.
- Frosty the Snowman
- Tommy Tinkerton: Mayor Tinkerton's son
- Mayor Tinkerton: The mayor of the town of Evergreen
- Charlie Tinkerton: Mayor Tinkerton's son/Tommy's older brother
- Mrs. Tinkerton: Mayor Tinkerton's wife/Charlie & Tommy's mother
- Walter Wader: Tommy's best friend/next door neighbor
- Mrs. Wader: Walter's mother
- Mr. Wader: Mrs. Wader's husband/Walter's father (debut)
- Sara Simple: Tommy's love interest, who dreams of urban planning instead of a princess, loves how to ice skate and dislikes pianos
- Mrs. Simple: Sara's mother
- Mr. Simple: Mrs. Simple's husband/Sara's father (debut)
- Miss Barker (mentioned only)
- Sonny Skarlow
- Sullivan "Sully" Skarlow
- Simon Skarlow
- Mr. Skarlow: Mrs. Skarlow's husband/Sonny, Sullivan & Simon's father
- Mrs. Skarlow: Mr. Skarlow's wife/Sonny, Sullivan & Simon's mother (debut)
- Miss Sharpey: A school teacher of Evergreen School
- Principal Pankley: A dastardly school principal of Evergreen School/enemy of Tom, Jerry, Tuffy and Frosty
- The Serecity Cop (debut only)
- Professor Hinkle: (mentioned, photograph/comic book cameo)
- Jeff Bennett as Tom
- Frank Welker as Jerry
- Kath Soucie as Tuffy, Tommy Tinkerton, Mrs. Tinkerton, Old Sara Simple, Girl #1
- Dan Aykroyd as Frosty
- Peter Cullen as the Narrator
- Tom Kenny as Mayor Tinkerton
- Debi Derryberry as Charlie Tinkerton
- Tara Strong as Sara Simple
- Karan Brar as Walter Wader
- Jim Ward as Principal Pankley
- Grey DeLisle as Miss Sharpey
- Tress MacNeille as Mrs. Simple, Girl #2
- Angela Bassett as Mrs. Wader
- Mick Wingert as Mr. Simple, Mr. Skarlow
- Jacob Bertrand as Simon Skarlow, Sully Skarlow
- Lincoln Melcher as Sonny Skarlow
- Rob Rackstraw as Professor Hinkle
- Rated G: For Everyone All Ages.
- Suggested Running Times: 91 Minutes (NTSC), 87 Minutes (PAL).
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