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"The Swarm Flock - a flying group of Swarm Leeches - will be your worst nightmare."
—Official Gears 5 statement.

A Leech is a type of creature found within the Swarm. They are capable of flight and hunt in packs. They also have the ability to subvert COG technology such as the DeeBees, creating Rejects, Stumps, and Bastions. When it comes to humans, a single Leech will either explode on contact or burrow into the chest of a human and expel right back out, killing the host. When hunting in packs, the Leeches are called a Flock.[1]

On their own, a single leech is not a threat and can be easily dispatched with a few shots. Instead, they act more as nuisance from the much larger and more dangerous flock. There is a quicktime event in which a leech (if it gets a hold on the player) would try and burrow into the player's chest. If he/she fails they will die a gruesome death.

Behind the Scenes[]

  • While a leech craws on the ground, it is unknown how a flock of them could fly given the lack of any gaseous buoyancy as seen from a Gas Barge and a Reaver.
  • Their name and way of attack (burrowing through the chest) could be a reference to the Heart Leech found in the Outer Hollows.
    • They could even be the Swarmified decedents of a Heart Leech.
  • How they subvert and take control of electronic equipment is unknown, but like the spikes from a Pouncer, the Swarm may have bio-engineered themselves to hack into COG equipment through bio-electricity.



Hollow and Enemy Creatures
Locust Horde
Berserker (Matriarch) · Boomer (Butcher, Flame Boomer, Grinder, Mauler, Mauler Elite, Savage Boomer, Tremor) · Drone (Beast Rider, Bolter, Cyclops, Disciple, Flame Drone, Grappler, Gunner, Miner, Savage Drone, Savage Hunter, Savage Marauder, Sniper, Spotter) · Grenadier (Flame Grenadier, Grenadier Elite, Hunter, Hunter Elite, Savage Grenadier, Savage Grenadier Elite, Ravager) · Kantus (Armored Kantus, Savage Kantus, Zealot) · Rager · Sire · Theron (Cleaver Theron, Palace Guard, Savage Theron, Theron Elite, Theron Sentinel)
Hollow Creatures
Bloodmount · Brumak · Corpser (Shibboleth) · Digger · Gas Barge · Heart Leech · Kraken · Kryll · Leviathan · Mangler · Nemacyst (Ink Grenade) · Nemacyte · Reaver (Assault Barque, Hydra) · Riftworm · Rockworm · Rock Shrew · Seeder · Serapede · Siegebeast · Tempest (Shrieker) · Ticker · Torture Barge · Wretch
Former · Lambent Berserker · Lambent Brumak · Lambent Bull · Lambent Dog · Lambent Drone (Lambent Drudge) · Lambent Grenadier · Lambent Gunker · Lambent Leviathan · Lambent Polyp · Lambent Stalk · Lambent Theron · Lambent Wretch
Canker · Carrier · DeeBees (Bastion, Reject, Stump) · Drone (Elite Drone, Grenadier, Elite Grenadier, Hunter, Elite Hunter, Imago, Sniper, Elite Sniper) · Flock (Leech) · Hive Beast · Juvie (Screamer, Popper) · Kraken · Locust (Drone · Matriarch · Sire) · Scion (Armored Scion, Heavy Scion, Scion Elite, Warden) · Snatcher (Pouncer) · Swarmak
DR-1 · Shepherd (Deadeye) · Tracker (Shock Tracker) · Watcher (Guardian, Sentinel)