You can see the names of all the characters at IMDb. The link is below.
In the story, the side character names are Sarah, Tom, and Emily.
This Character does not appear in the original story. Many new names have been added under the term "editorial licence" in films and plays since that time
The main character was Ralphie Parker, who was played by Peter Billingsley.
A Christmas Story
He's the main character in A Christmas Carol.
Ralphie .
Dumb & Dumber
Santa/Father ChristmasRudolphthe elf'sMars Clausangel
The green character in the Christmas story is the Grinch. He is a fictional character created by Dr. Seuss in the book "How the Grinch Stole Christmas!" The Grinch is known for his initial disdain for Christmas and the joy it brings, but ultimately he undergoes a transformation, realizing the true meaning of the holiday.
That could be the character, Ebenezer Scrooge, in the story A Christmas Carol by Charles Dickens.
Rapunzel, Rumpelstiltskin
the old man Parker