Santa Claus's reindeer's great-great-grandchildren are characters in the 2011 film Arthur Christmas. They are the great-great-grandchildren of the original eight reindeer that pull Santa Claus's sleigh.
They are used by Arthur Claus, his grandfather Grandsanta, Bryony Shelfley and Grandsanta's pet reindeer to pull Grandsanta's sleigh Eve in order to deliver a bike to a young girl named Gwen after it was forgotten accidentally.
They get separate from Arthur, Grandsanta and Bryony throughoutthe journey, but eventually follow their natural compass back to the North Pole.
At the end of the film, it is revealed that they have taken up a new post of leading five thousand reindeer pulling the S-1 (the Ship used to deliver presents) which had been renamed Evie (in honorary of Grandsanta's sleigh), with Arthur as the new Santa.