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We are small, but we are legion.
― In-game description

Rat King is an exotic sidearm. It can be dismantled to generate Glimmer, Gunsmith Materials, and Legendary Shards.


This weapon has the following lore associated:

The stories are passed from child to child, whispered in the streets and on the playground like any good legend. “Don't ever venture beyond the wall and sight of the Tower,” parents warn, citing these cautionary tales that speak of the boy's many deaths. Exposure. Hunger. Sickness. Cutthroats. Living nightmares. And on. And on. The children, however, have their own truths. To them, the boy never died. They call him the Rat King. The children believe he leads the forgotten among them out of the City on grand adventures. They say he and his misfit army saved the world. But children say many things, and the Vanguard maintains their official stance: there is no Rat King and his army never existed. That's what the elders believe. I choose to believe otherwise.


The Rat King can be obtained via the following method:

1. Complete the main story of Destiny 2.
2. Travel to Titan and complete the quest "Enemy of My Enemy". Once you complete it, you'll receive an item called the "Rat King's Crew" in one of your Kinetic Weapon slots. In order to continue the questline, you'll need to perform the remaining steps with another player who also has the "Rat Kings Crew" item.
3. Together with your partner, complete three Patrol Missions.
4. With your partner, Complete two Public Events. They do not need to be Heroic Difficulty.
5. Play two Crucible matches with your partner.
6. Complete Nightfall: The Ordeal with another player in your fireteam (they may need to be on the same step of the quest line). After completing the quest, you'll receive the Rat King. (This used to require you finish the strike with time restrictions, however, nightfall no longer has a strict 11-minute time limit)


Rat King can also be upgraded with the following perks:

Column 0[]

Rat Pack perk icon.png Rat Pack
This weapon becomes stronger when nearby allies also have it equipped. Stacks up to 6 times.

Column 1[]

Smallbore perk icon.png Smallbore
Dual strength barrel.
  • Increases range
  • Increases stability

Column 2[]

Tactical Mag perk icon.png Tactical Mag
This weapon has multiple tactical improvements.
  • Slightly increases stability
  • Increases reload speed
  • Slightly increases magazine size

Column 3[]

Vermin perk icon.png Vermin
Reloading immediately after a kill grants a brief period of invisibility.

Column 4[]

Smooth Grip perk icon.png Smooth Grip
This weapon is slightly easier to hold and aim.
  • Slightly increases stability
  • Slightly increases handling speed

Column 5[]

Default Ornament perk icon.png Default Ornament
Restores your weapon to its default appearance.
Black Plague perk icon.jpg Black Plague
Equip this Weapon Ornament to change the appearance of Rat King.
Catacombs perk icon.jpg Catacombs
Equip this weapon ornament to change the appearance of Rat King. Once you get an ornament, it's unlocked on all characters on your account.