- SpongeBob the Elf
- Winter Squidlock
- Cosmo the Elf (debut)
- Elf who looks like Wanda (debut)
- Two members of Misers
- Elf who looks like Jimmy Neutron
- Elf who looks like Carl Wheezer
- Vicky the Elf (debut)
- Elf who looks like Helga Pataki
- Elf who looks like Arnold Shortman
- Elf who looks like Gerald Johanssen
- Elf who looks like Jorgen Von Strangle
- Elf who looks like Courtney Gripling (debut)
- Elf who looks like Tommy Pickles
- Elf who looks like Zim
- Elf who looks like GIR
- Elf who looks like CatDog
- Yukon Chinelias
- Elf who looks like Angelica Pickles
- Elf who looks like Chuckie Finster
- Elf who looks like Hoodsey
- Laughing people (only heard) (debut)
- Elf who looks like Donnie Thornberry
- Clones of the elf that looks like Carl Wheezer (debut)
- Elf who looks like Debbie Thornberry
- Elf who looks like Carl Foutley
- Butch Hartman (debut) (shown in photo)
- Elf who looks like Otto Rocket (debut)
- Elf who looks like Reggie Rocket (debut)
- Elf who looks like Twister (debut)
- Elf who looks like Squid (debut)
- Two turtles (debut)
- Elf who looks like Patrick
The 12 Gifts of Nickmas
- 12 bubbles blowing! (sung by SpongeBob)
- 11 clones attacking!! (sung by Jimmy Neutron)
- 10 thousand places I'd rather be right now (sung by Debbie Thornberry)
- 9 reindeer droppings! (sung by Carl Foutley and Hoodsey Bishop)
- 8 oddball wishes! (sung by Cosmo and Wanda)
- Watch out, Vicky! (spoken by someone off-screen)
- 7... thousand... pounds (sung by Vicky)
- 6 jamming jellys! (sung by Squidward)
- 5 Incredibly expensive golden rings! (sung by Courtney Gripling)
- 4 dudes a shreddin! (sung by Otto Rocket)
- 3 cans of hairspray! (sung by Arnold, Gerald, and Helga)
- 2 turtles love... (sung by Cosmo)
- Oh, Cosmo! (spoken by Wanda)
- And a starfish on a pine tree! (sung by all)
- Pointy (spoken by Patrick Star)
- The elf who looks like Patrick on top of the pine tree at the end of the short is a reference to "Christmas Who?" when Patrick jumps up on top of the coral tree during the song "The Very First Christmas."
- Besides Butch Hartman's portrait, the "eight oddball wishes" that Cosmo and Wanda produce include a toilet, an old-time bicycle, a donkey carrying a suitcase, a giant set of false teeth, a big toy submarine that looks like the one Wanda transforms into during the song in "Christmas Every Day!," a bowl of cereal, and a plastic whale that resembles Big Ben.
- The "six jamming jellies" line during the music that plays when Winter Squidlock sings is a background music piece titled "Stadium Rave," originally used in the episode "Jellyfish Jam."
- The title shares the name of the Christmas carol.
- When Vicky stops singing her part of the song, her legs twirl up. This is a reference to when the Wicked Witch of the East dies in The Wizard of Oz.
- The elf that looks like Jimmy being chased by the elf that looks like Carl's clones is a reference to the Jimmy Neutron interstitial short "Carl Squared."
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