There are two kinds of villagers that live in the Nether. Those that live in the warped biome and those that live in the crimson biome. They fell into the Nether long before, and evolved to survive their new home. The two villages don't like each other–like the Hatfields-McCoys. Their evolution makes them stronger than normal villagers, able to mostly take care of themselves in the harsh environment of the Nether. They use the materials they gather from their respective forests to create tools to farm and survive.

Nether Villages