New Year's Passions, or My Grandfather Frost is a VAMPIRE!

Who is it with an enormous sack,
Who walks through the forest on foot,
Could it be a cannibal?
— No.
Who got up just as daybreak came
And carries a sack of candy,
Might it be your neighbor?
— No.
Who comes on New Year’s Day
And lights up the lights on the Christmas tree,
Will the electrician turn on the lights for us?
— No.
So who is it? Here’s the question!
Well, of course…