Bosses are special NPCs. They are usually found at the end of Zombie Scenario, Human Scenario modes or at some certain rounds of Zombie Shelter: Coop. They are the hardest to be eliminated out of all other AI-controlled characters and also have very powerful attacks.
However, some bosses were chosen to be controlled as playable characters in Zombie Giant mode.
Zombie Scenario Season 1
- Main article: Prototype Phobos.
The first boss appeared in Last Clue. It can perform normal melee attacks, dash and stomp. When doing the stomp skill, it releases a shock wave which drops nearby players' weapons.
- Main article: Siege Type Phobos.
The second boss appeared in Chaos. Its attacks are similar to Prototype Phobos except it can summon Heal Zombie to restore its health.
Zombie Scenario Season 2
- Main article: Dione.
The boss appeared in Toxicity. It can swing to damage nearby enemies, do tentacle attack from the ground to send humans in the air for a while and poison spray that can do continuous damage on the victim.
- Main article: Siege Type Dione.
The boss appeared in Culvert and Decoy. It shares the same properties as the normal Dione except the red spikes and yellowish belly. Siege Type Dione evolves from Dione at Round 9 of Culvert. It cannot be harmed.
- Main article: Revenant.
The boss appeared in Decoy. Unlike the previous bosses, its attacks are flame-based which are fireballs and firestorm. It can also use Mahadash skill, similar to Phobos. When it is going to create a firestorm, the player can interrupt by activating the cooling pipes.
- Main article: Angra.
The last boss of Season 2 that appeared in Angra Nest. It is the final evolution of Dione and can fly up to the sky. It can breath poison and summon tentacles to damage the player. It can also do a stomp where the player's weapon will drop regardless the player's position.
Zombie Scenario Season 3
- Main article: Fallen Titan.
The boss appeared in Contact chapter. It is the infected version of Heavy Titan from the Vanguard troop. It can do dash, melee, single cannon, multiple cannon and landmine attacks.
- Main article: Bio Scorpion.
The boss that appeared in Behind chapter. It is a giant scorpion modified with high technology. It can do tentacle attack, storm attack, guard and dash.
- Main article: AMP Suit.
The boss that appeared in Threat chapter. It is an infected AMP Suite. It appears in Round 1 and the players must weakens it before it destroys the main tower. At the end of the round, another AMP Suit goes to the main tower and kidnap Erica.
- Main article: Kraken.
The boss that appeared in Panic Room chapter. It has three forms: tentacle and main body with armor, and main body with no armor. Tentacle attacks by stomping the body to the players while the body attacks with missiles and laser beam.
Zombie Scenario Season 4
- Main article: Frozen Terror.
The boss that appeared in Encounter chapter. It is an infected Yeti. It can throw spiked club, high jump crash, spinning, snowball slam and dash.
- Main article: Gluttony.
The boss that appeared in Conspiracy chapter. It has huge belly, small wings, big back legs, but small front ones. It can swallow the players into its gut and the swallowed players must get out by planting 3 C4s in the gut.
- Main article: Neid and Zavist.
Zombie Scenario Season 5
- Main article: Laser Wing.
The boss that appeared in Omen chapter. It is an infected grasshopper. It can fly, high jump, strike the player to inflict damage, summon swarms of locust and meteor kick.
Human Scenario
- Main article: RAH-66 Comanche.
The boss that appeared in Desert Storm and Hellfire chapters. It is an American in-built helicopter that can do missile and minigun attacks.
- Main article: Goliath.
The boss that appeared in Sidewinder chapter. It can do missile, flamethrower and minigun attacks.
Event
- Main article: Teddy Terror.
The boss which appears in Nightmare as a teddy bear and has a hugehammer. It applies as a skin to previous bosses during event.
Zombie Shelter: Coop
- Main article: Zombie Shelter: Coop.
Zombie Giant
- Main article: Zombie Giant.
In this mode, a random player will be selected as the boss and need to annihilate the humans. While human players are assisted by bots and can mount a XT-300 Goliath upon summoning to against zombies.
More than one boss can appear, depending on the number of players in the room.
Trivia
- Bosses were to have their own Kill FX (as shown at the top page), but they do not show up for unknown reasons.
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