Honorable Mention: Delibird
I know what you’re thinking. Delibird is not your traditional Santa Claus and you’re right. Which is why it lands itself as an honorable mention.
Delibird’s Pokedex entry reads “It has a generous habit of sharing its food with people and Pokémon, so it’s always scrounging around for more food. “
Santa Claus comes down the chimney and eats your food, which already makes Delibird look better.