Boarbarians

Boarbarians would basically be hairy versions of piglins, but with some important differences. They would attack anything with at least 20 health and does physical damage, so not evokers or witches. They wouldn't turn into zombies in the overworld, because their hair keeps them warm. They can also capture you and put you in an arena made of an invincible kind of bricks, so you can't mine out. If you beat everything in the arena, you'll be given the effect Champion of the Boarbarians, which will make all boarbarians neutral towards you. There will be an armory that you can get weapons from as well, and most of the weapons will be netherite and there will also be new weapons like hammers. The normal ones will be as strong as piglin brutes, and there will also be 2 stronger variants: the brutes, which have 75 health and do 50% more damage, and the champion, which will have 100 health and do twice as much damage. Also, the barbarians don' t barter with you, so they don't get angry about gold mining or chest opening. I personally think this would be a great way to add some very unique and challenging enemies.