Cleaver

The Cleaver is a Hive melee weapon that is normally carried by Knights, but can be wielded by Guardians under special circumstances.

Useage
Picking up the Cleaver will change the camera perspective to third-person. Pressing the aim button will do a quick swing, which can be tapped rapidly to do a combo. Pressing the fire button will do a powerful swing. Finally, if a player's Supercharge meter is full, activating one's super will make the blade release a shockwave.

Sword of Crota
During the story mission the Sword of Crota, the player picks up a cleaver that belonged to Crota. This weapon is said to consumer the light of Guardians, but does not adversely affect the player during the mission. The player then has to use it to defeat the three Swarm Princes, after which the sword disintegrates and the mission ends.

Random Event in Old Russia
As of December 2nd, Hive enemies will periodically invade different parts of Old Russia. Some of them will be high level, including one named Knight called the Blade of Crota. Killing the Blade will drop a cleaver, which the player can then use for one minute.