The zombie is one of the main "villains" in Minecraft. It is one of Minecraft hostile mobs, and spawn in the Overworld. In the Overworld, zombies spawn in groups of 4 at a light level of 7 or less. In desert biomes, all zombies exposed to the sky will have an 80% chance to be replaced by husks, a zombie variant. Zombies that are not husks have a 5% chance to spawn as a zombie villager while all zombie variants also have a 5% chance to spawn as a baby zombie type. Baby zombies have an additional 5% chance of spawning as a chicken jockey.