The Spore Zombie is a zombie variant that only appears in Glowing Mushroom biomes at any point in the game. It acts the same as normal zombies, slowly walking towards the player to deal contact damage, while attempting to navigate around obstacles. However, it is differentiable by normal zombies due to its mushroom-covered appearance, spawning at any time of day, and generally more powerful stats. Unlike normal zombies, it is always able to open doors regardless of whether or not it is a Blood Moon.
Spore Zombies can appear in two different variations with slightly different stats. Unlike normal zombies, it does not have an armed variation in Expert Mode.
The Spore Zombie can be seen as a sort of counterpart to the Spore Skeleton, as they are both mushroom biome versions of normal undead enemies.
The Bestiary entry for the Spore Zombie: "The fungus controlling the minds of these zombies wants only one thing: brains! This is very convenient for the zombie."