Zombies

Zombies are the primary enemy in Zombie Forest HD, as the name suggests. Alone, they are extremily weak and can be quickly dispatched by even Melee troops. However, they are almost never alone.'

Zombie types
There are three types of zobies in the game, appearing from a certain point in progression.

Normal
Normal zombies are by far the most common type in the forest. They appear in large groups and are seen from the very beginning of the game. Some of them us faster than each other. However, they are very fragile, and several AR troops can erase hordes of them.

Throwers / Toxic Zombies(?)
They also have a single model (which looks like your average toxic zombie), are somewhat slower than the Normal ones, and throw stuff / toxic goo, according to their name. They are tough, but the fact that they almost never come in groups as large as Normal ones makes them easy to get rid of. They can just throw their goo at your barricades to break it without touching them.

Brutes(?)

They looked like some skeleton-zombie soldier hybrid that is tougher than every zombie that exists in the game. These types of zombies will break down your reinforcements quickly before dying. Some units with ARs can mow down this forsaken walking corpse and jam their guns because this forsaken corpse takes up like 10-20+ bullets to die. (This type of zombies can end your gameplay if not disposed ASAP)

Kamikazer(?)

The Kamikazer is a blue zombie that is faster and weaker than everything in the game. They will explode upon death, damaging your barricades or killing your fellow comrades. Better kill them as soon as possible before they explode near your barricades or your beloved troops. (Snipers can snipe them before they can get inside your base.)

Capturing
Zombies can be captured in raids using the Tranquilizer. The Zombies have different levels.

Usage
Captured zombies can be used as assistance in raiding other bases, coming before your troops. However, they take damage and can easily die when facing a decent defence (like barbed wires or an enemy troop with an AR).

There is also a special interaction at night, Wanted Zombies. It provides decent rewards for specific zombies at certain level. To level up the zombies, just feed them to one another. (Example of "Wanted Zombies": Level 15 [type of zombie] for a Level +2 AK-47)

 SPOILERS COMING 

In the "story mode" there is a task to collect a lot of zombies and release them after vaccinating them  SPOILERS END 

Events
Zombies may breach containment, deling some material damage and disappearing.