The Grinch
From Tardis Wiki, the free Doctor Who reference
Andy Hansen compared Erimem's description of Christmas to that The Grinch would give. Erimem didn't understand the comparison. (PROSE: In Search of Doctor X)
Ryan Sinclair called Krampus a "regular Grinch". (COMIC: Holiday Special)
Behind the scenes
The Grinch is the titular character of the Dr Seuss book How the Grinch Stole Christmas!.
Benedict Cumberbatch voiced the character in the 2018 film adaptation.
The book's title was used as a possible answer in one of the competition questions in DWM 558, the question being "Which of these classic films is also the title of a Doctor Who Christmas special?"