The frost bitten ones

Theyre backstory would be they were once villagers living in one of the snowy biomes but there village got pillaged by the illagers and now they are the sworn protectors of snowy biome villagers along with iron golems. They would half resemble a villager and look mostly cold and frost bitten. They would live in a new generated structure called: frost caves! These would be small caves in a mountain and would have some beds, torches, and tables along with maps of where pillager outposts in that  biome are. They would have polar bears as pets. Occasionally they will send a party of about five or six to battle the pillagers along with some of their polar bear reinforcements. Whenever a raid starts in a snowy biome around ten frost bitten would spawn in the village with a sword, helmet, and shield. If you visit a frost cave with frozen emeralds (emerald plus block of ice) they would try to trade with you. If you hit them they would attack you along with there polar bears sort of like piglins. If you want to trade with them one of their trades would be a pet polar bear that could attack other mobs with you sort of like a tamed wolf. If the frost bitten ones leave a snowy biome they would start to take damage. And maybe pillagers would stage attacks on the frost bitten ones as well.