Space Monkeys are first, and so far only, introduced in Ascension. They are similar to the Pentagon Thief by stealing the players' weapons, except they steal the players' perks in the form of attacking the various perk machines and can also damage the player's health and kill the player. They replace the Hellhounds and Pentagon Thief on this map. They wear space suits similar to the ones worn by regular zombies, and are likely zombified primates from the Soviet Space Program. The space monkeys will attack a perk machine until the player loses his/her perk. Once the machine has been disabled the player must re-buy the perk. If the players successfully kill all monkeys without having any machines attacked then they will drop a random perk bottle at the end of a round, giving the player a random perk. The monkeys arrive in rockets crashing onto the ground. It can be assumed that they are related in some way to Yuri Kravcheski, due to an excerpt from his rant in the second radio message, "My intellect is ill served blasting a bunch of monkeys into the atmosphere!". It can also assumed that they have been exposed to Element 115, due to their glowing red eyes, and increased physical capabilities.
When the monkey round occurs, the player will hear a buzzer in the beginning of the round, and the map will turn in a yellow-orange tint. Also, the announcer will alarm the player by saying "Warning. Re-entry detected. All security personnel on high alert.".
It should be noted that if the player has obtained a perk from the random perk bottle and have not opened the area in which the Perk-A-Cola is in, the Space Monkeys will not attack that perk machine.