Mule Kick is a Perk-a-Cola that appears in every single Call of Duty: Black Ops map as long as you're connected to the internet (including World at War remastered maps), and without internet conncection this perk will only appear on Moon, on pc however if you have the patch you can have Mule kick on every map even if you don't have internet connection. This perk also returns on Black Ops 2 zombies on the new map Die Rise . The effect gives the player an additional weapon slot bringing the total number of weapons a player can hold to three. If the player gets downed with Mule kick while having a 3rd gun, one of his guns will get lost so the perk is a bit risky.This perk is currently the most expensive perk, and the third most expensive thing available for purchase, at the high price of 4,000 points. The Mule Kick's icon is three white pistols along side each other with a dark green background.
Mule Kick will give you 3 guns, but if your on final stand mode you will lose your 3rd weapon.
Mule Kick does not appear anywhere in the i-pod zombies app.
Mule kick is the third most expensive item in any Zombies map, the second being Pack-A-Punch, along with Galvaknuckles as the first.
On the map Town, you can see green light. You can also see the sign spelling "Moon". This means that Mule Kick was first introduced in the Nazi Zombies Black Ops I map Moon. It seems that Treyarch put Mule Kick in that zombie barrier.