I'm not sure if he's considered a "Christmas Character" for anyone else, but he (and his infamous quote) is a staple in our house at the holiday season... Buddy the Elf! Say it with me... "The best way to spread Christmas cheer is singing loud for all to hear!" hahahaha... love it!
I would have to say Frosty. He made so many people happy in such a short amount of time! And as he left he said, "don't you cry, I'll be back again some day."