Knife

A Knife is a man's best friend. It's quick, efficient, and most of all, everywhere. Humans have the luxury to spawn with a Knife along with with their pistol. The Knife, while weak on its own, has a special ability that is able to kill any zombie in the game, no matter the health. However, it requires certain skill to pull off.

Advantages

 * Able to one-shot Fatkid with its backstab ability. This allows for sneaky players or those with a Cloak powerup to be able to get behind Fatkid and land a backstab. Backstabs also count as Fatkid kills, so you can utilize them early in the round to get some kills towards MVP. However, this is highly unrecommended, as it's risky to pull off.
 * About the only melee besides the Gauntlet, which it restricted only to a few certain maps and the "Doomfist" mutation. This can be used to hold off zombies if they get a little too close, but this is very risky, as zombies do 225 damage per swing if you're even holding the Knife, because of its x3 damage multiplier.

Disadvantages

 * Very weak on its own. It does a very small amount of damage to Fatkid, so running in with a Knife and attempting to facestab Fatkid is a dumb move.
 * Allows zombies to do 225 damage to you. If you don't have a full shield, this could mean instant death.
 * Very unreliable. The Knife should only be considered as a last minute resort, and should not be used as a spawnkilling machine. It takes a while for the backstab to go through, and a zombie can still kill you while you are backstabbing Fatkid.

Trivia

 * The Knife was the first ever weapon added into the game, back when fearlesswee was still testing the backstab system in 0.0.1.
 * It holds the rare ability to be able to one-shot Fatkid. Only a few weapons hold this ability, those being the BFG, Nuclear Option, and the "POW" taunt.