Heeseung, Santa's grandson. Heeseung was on the mission to replace Santa for this year's Christmas because Santa was sick and had a cold. Heeseung is portrayed as a handsome and nice 22 year old who's doing Santa's job this Christmas. Just like his grandfather, he likes cookies and milk. He's nice and sweet. Unlike his grandfather, he wears blue and not red. Heeseung borrows Rudolph the red nosed reindeer so he can travel around the world with a sleigh so he can do Santa's job this Christmas.