Granny Annis' list is a smidge spicier than St. Nick's (Patreon)
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The Annis is both the friendliest hag and the one your players are most likely to fight, because she doesn't play. She's here to eat naughty children and chew bubblegum, and she's all out of bubblegum (and has an exceptionally broad definition of what counts as "naughty"). She could probably do some cool magic if she wanted, but you will note that "doing some cool magic" isn't on that to-do list.
Fun bit of real world lore, it's said that the windows in Leicestershire are built high and small to make it harder for Black Annis to reach through them, which is a clever way to convert your bad architecture into child nightmares.
The Candlewax Golem is an infiltrator, assassin, or unobtrusive temple guardian that can seal creatures in wax tombs, turning them into living statues and stealing their faces. Also somewhat interestingly, they both wield fire and are vulnerable to it.