Mission KeyDMZ field guide

Lieutenant · X01 · Updated 10 Nov 2026

Knuckle Tae-Hyun

LieutenantName bar: Lieutenant Tae-HyunData CenterSource Code

Lieutenant Tae-Hyun, called Knuckle. He fights from behind a riot shield in the unlit Data Center server room.

Drops

What Knuckle drops

Lieutenant page →
  • Dog TagCarrying it shows your position to other squads.
    Dog Tag
  • Rezi 12Shotgun.
    Weapon
  • BackpackHis own backpack. Loot it after the kill.
    Backpack

Every drop here has two independent sources.

Knuckle area gameplay capture
Gameplay capture.
Knuckle area gameplay capture
Gameplay capture.
Knuckle area gameplay capture
Gameplay capture.
RankLieutenant
MapX01
Drops3
OrdersSource Code

Where and how

  1. Find him in the dark server room of the Data Center.
  2. Watch the Source Code Order: its download panels sit in the same dark room.
  3. Check the FOB Boss Board: his card is filed as Tae-Hyun and reads Found in: X01.

Orders

OrderX01 5/5

Source Code

Three downloads in the Data Center dark room and an extraction, all in one match.

Page 5/5Data CenterKnuckle
Open guide →

Areas

AreaX01

Data Center

Encoder at I5Data Center floorKnuckle
Open area →

More X01 drops

CommanderThe Logistics Tunnel

Wheelson

Drops

Remote Module
Open Wheelson →
LieutenantThe Motor Pool, inside the parked tanks

The Wrench Chol-Min

Drops

Dog TagType 73Backpack
Open The Wrench →
LieutenantOnly the Deep Vault, and not every match

Blix

Drops

Dog TagRezi 12Backpack
Open Blix →

Sources

  • DMZ Map — X01 guide — drops Dog Tag; drops Rezi 12; drops Backpack; Find him in the dark server room of the Data Center; Watch the Source Code Order; night vision; Shock Charges, Thermite and Drill Charges vs the shield
  • MetaRadar — MW4 DMZ Bosses — drops Dog Tag; drops Rezi 12; drops Backpack; Find him in the dark server room of the Data Center; night vision; explosives around the shield; Dog Tag shows your position
  • COD Central — Boss Board — drops Dog Tag; Lieutenant dog tag shows your position
  • MetaRadar — X01 Black Site guide — Find him in the dark server room of the Data Center; Watch the Source Code Order
  • Owner screenshot captures, 10 Nov 2026 — Check the FOB Boss Board

Frequently asked questions

What does Knuckle drop in X01?

Dog Tag; Rezi 12; Backpack.

Where is Knuckle in X01?

The dark server room in the Data Center.