Krampus (mythology)

Krampus was a being who fed on the fear of children. Under the alias Mr. Henderson, she appropriated the aesthetic of Christmas, disguising herself as Santa Claus to terrify the love of Christmas out of children of Earth for her and her minions. She kidnapped workers to create a hybrid teleportation and energy collection device.

The Thirteenth Doctor, Team TARDIS, and Baxter stopped her plan after their second visit to Mr. Henderson's world, once they realised the memories of their unsuccessful first visit were altered.

She considered herself a vegetarian, as she consumes energy instead of flesh. (COMIC: Holiday Special)