* Rudolph: A young reindeer with a bright red nose who is rejected by the other reindeer because of it. He is later chosen to lead Santa's sleigh on Christmas Eve.
* Clarice: A young female reindeer who is Rudolph's love interest.
* Hermey: An elf who is apprenticed to Santa's head elf, but dreams of becoming a dentist.
* Yukon Cornelius: A prospector who is searching for gold in the North Pole.
* The Abominable Snow Monster: A large, yeti-like creature who lives in the North Pole.
* Santa Claus: The jolly old elf who delivers presents to children all over the world on Christmas Eve.
Additional Characters:
* Fireball: Rudolph's friend, a white reindeer with a fiery red mane and tail.
* Slyly: Rudolph's other friend, a grey reindeer with sly smile.
* Zoey: Rudolph's mother.
* Arrow: Rudolph's father.
* Grandpa Doc: Hermey's grandfather, who is also a dentist.
* Mrs. Claus: Santa Claus's wife.
* The Elves: Santa Claus's helpers who make the presents and load them onto his sleigh.
* The Reindeer: Santa Claus's team of reindeer who pull his sleigh.