- "What the hell was that?!"
- — Andre
Aliens (also referred to as Alien Greys in Boss Battles) are a special type of enemy found in the Call of Duty: Infinite Warfare Zombies map Zombies in Spaceland. They appear only during the final boss fight during the map's main easter egg.
The Alien only spawns into the map during the final boss fight of the map's main easter egg. Depending on the amount of players in the game depends on how many Aliens will spawn. The Alien commonly teleports around the arena, teleporting in front of the player or on the rooftops of several of the buildings. The Alien will shoot a couple rounds from its raygun, which can nearly down a player in one shot without Tuff 'Nuff. If a shot hits the ground, it will explode, making a mini shockwave which will stun the player in the blast radius for a brief moment. If the player is too close to the Alien when it's on the ground, it will knock the player backwards.
Despite this, the Alien has one major weakspot, the glowing orb on his collar. Every time the Alien is damaged, the color of the orb changes from green to yellow to red. Once its health has been depleted, the Alien will kneel on the ground. Here, the player can knife its back, where it will drop one of the Alien Fuses. The Alien will get back up and the player must deplete his health again and knife him for a second time. Once both fuses have been knock out of his backpack-like object, the player must now deplete his health again. Instead of kneeling, the Alien will simply die. Once all of the Aliens have been killed, the player can pick up the Alien Fuses in front of the main teleporter and install them into the Pack-a-Punch Machine, where the player(s) can now double Pack-a-Punch for the rest of the match.