The Pet Zombie is a pet, exclusive for the console and the mobile versions of Terraria. To obtain a Pet Zombie, a Brain must be used, which, like with other pet summoning items, are found in random chests underground. However, the pet zombie can also be found by a drop from the Groom. The Pet Zombie looks similar to a regular zombie but has a red coloration.
If the zombie gets too far from the player or can't get to the player, it will fly to the player's position while emitting the Spectre Boots particle effect. In this state, the zombie can move through blocks.
This pet deals 1-5 damage to enemies which it collides with.
May be a reference to the character Michonne and her pet zombies from the Walking Dead TV series.