Zombies (Plants vs. Zombies)

Zombies are the main protagonists/enemies of the famous video game Plants vs Zombies.

The Zombies are very reanimated and mindless, which are very hungry for human brains. The mission of the game is to prevent them from attempting to eat the player's brains. All of them have various speed and defense levels. All of the zombies look exactly the same, except they have different clothes on. They have a huge head, massive eyes, with their jaws open. They appear to be totally bald, while their skin appears to be green.

History
The history of all the Zombies started from the most common zombie in the game the regular Zombie, which is also the weakest one. Once the started one was created, all the others ones were made for the game. Every level in the game actually has the starter Zombie in-game.