The Grinch
From Tardis Wiki, the free Doctor Who reference
Andy Hansen made a reference to The Grinch. (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.