TheWoWDBLiberation of Undermine
Mug'Zee, Heads of Security Guide
Mug'Zee, Heads of Security in Liberation of Undermine, quoted from the Adventure Guide. Database holds the raw abilities and the full loot table.
30-second TL;DR
Adventure Guide says
- The two heads of Mug'Zee, Mug and Zee, begin the encounter in a friendly contest to see who is in control.
- Whichever head has all the most players on their side of the arena becomes the Head Honcho, activating a unique set of abilities to unleash upon players.
- Stages named in the Adventure Guide: Tanks, Damage Dealers, Healers, Stage One: The Heads of Security, Intermission: Bulletstorm, Stage Two: The Head Honcho.
- Tanks: Molten Gold Knuckles inflict heavy damage in front of Mug and apply Golden Drip to players hit.
- Healers: Elemental Calamity and Uncontrolled Burn inflict persistent damage over time each time Mug'zee swaps which head is the Head Honcho.
- Damage dealers: Earthshaker Gaols splits damage among all players within the effect, trapping them within earthen walls.
Overview
Adventure Guide says
The two heads of Mug'Zee, Mug and Zee, begin the encounter in a friendly contest to see who is in control. Whichever head has all the most players on their side of the arena becomes the Head Honcho, activating a unique set of abilities to unleash upon players. Upon reaching 40% remaining health, Mug and Zee combine their efforts and attack in unison granting them the use of all of their abilities at once.
- Molten Gold Knuckles inflict heavy damage in front of Mug and apply Golden Drip to players hit.
- Damage from Double Whammy Shot is mitigated by the closest player hit.
- Earthshaker Gaols splits damage among all players within the effect, trapping them within earthen walls.
- Touching Unstable Crawler Mines causes them to explode, unleashing an Unstable Cluster Bomb and causing all players to suffer from Searing Shrapnel.
- Frostshatter Spears inflict lethal damage to the first player or Earthshaker Gaol wall they hit.
- Elemental Calamity and Uncontrolled Burn inflict persistent damage over time each time Mug'zee swaps which head is the Head Honcho.
- Mug'Zee gains Moxie the longer each head is in command.
- Frostshatter Spears inflict lethal damage to the first player or Earthshaker Gaol wall they hit.
Encounter phases
Adventure Guide says
- Tanks Molten Gold Knuckles inflict heavy damage in front of Mug and apply Golden Drip to players hit. Damage from Double Whammy Shot is mitigated by the closest player hit.
- Damage Dealers Earthshaker Gaols splits damage among all players within the effect, trapping them within earthen walls. Touching Unstable Crawler Mines causes them to explode, unleashing an Unstable Cluster Bomb and causing all players to suffer from Searing Shrapnel. Frostshatter Spears inflict lethal damage to the first player or Earthshaker Gaol wall they hit.
- Healers Elemental Calamity and Uncontrolled Burn inflict persistent damage over time each time Mug'zee swaps which head is the Head Honcho. Mug'Zee gains Moxie the longer each head is in command. Frostshatter Spears inflict lethal damage to the first player or Earthshaker Gaol wall they hit.
- Stage One: The Heads of Security
- Intermission: Bulletstorm Upon reaching 40% health both heads decide to work together unleashing a series of Static Charges and Bulletstorms before their final, combined, assault begins.
- Stage Two: The Head Honcho
Tank mechanics
Adventure Guide says
- Molten Gold Knuckles inflict heavy damage in front of Mug and apply Golden Drip to players hit.
- Damage from Double Whammy Shot is mitigated by the closest player hit.
Healer mechanics
Adventure Guide says
- Elemental Calamity and Uncontrolled Burn inflict persistent damage over time each time Mug'zee swaps which head is the Head Honcho.
- Mug'Zee gains Moxie the longer each head is in command.
- Frostshatter Spears inflict lethal damage to the first player or Earthshaker Gaol wall they hit.
DPS mechanics
Adventure Guide says
- Earthshaker Gaols splits damage among all players within the effect, trapping them within earthen walls.
- Touching Unstable Crawler Mines causes them to explode, unleashing an Unstable Cluster Bomb and causing all players to suffer from Searing Shrapnel.
- Frostshatter Spears inflict lethal damage to the first player or Earthshaker Gaol wall they hit.
Normal, Heroic, and Mythic
Adventure Guide says
Only sentences the Adventure Guide itself marks as a difficulty change. We do not invent extra Heroic or Mythic strategy.
- On Mythic difficulty, Mug'Zee can only swap Head Honcho when all players are on either side of the room.
- On Mythic difficulty, Frostshatter Boots last indefinitely until coming into contact with a Hot Mess.
- On Mythic difficulty, Unstable Crawler Mine's inflict lethal damage to the player triggering it.
- On Mythic difficulty, MK II Electro Shockers gain Electro-Charged Shield until hit by Stormfury Finger Gun.
Boss abilities
| Ability | Adventure Guide | Notes |
|---|---|---|
 Head Honcho | On Mythic difficulty, Mug'Zee can only swap Head Honcho when all players are on either side of the room. | |
 Moxie | ||
 Elemental Carnage | ||
 Uncontrolled Destruction | ||
 Double-Minded Fury | ||
 Earthshaker Gaol | ||
 Frostshatter Boots | On Heroic and Mythic difficulties, a lethal Frostshatter Spear coalesces and launches towards affected players. On Mythic difficulty, Frostshatter Boots last indefinitely until coming into contact with a Hot Mess. | |
 Stormfury Finger Gun | ||
 Molten Gold Knuckles | ||
 Unstable Crawler Mines | On Heroic and Mythic difficulties, the player triggering the Unstable Crawler Mine takes increased damage from Unstable Crawler Mines. On Mythic difficulty, Unstable Crawler Mine's inflict lethal damage to the player triggering it. | |
 Goblin-guided Rocket | On Heroic and Mythic difficulties, players hit by Goblin-guided Rocket become afflicted with Radiation Sickness. | |
 Spray and Pray | ||
 Double Whammy Shot | ||
 Electrocution Matrix | ||
 Static Charge | ||
| Bulletstorm | ||
 Stormfury Cloud | ||
 Bloodlust |
Loot
Every name is a TheWoWDB item page. Hover the row for the first-party tooltip.
Big Earner's Bludgeon
"Bullet-Proof" Vestplate
Capo's Molten Knuckles
Cemented Murloc-Swimmers
Design: Magnificent Jeweler's Setting
Enforcer's Sticky Fingers
Epaulettes of Failed Enforcers
Gobfather's Gifted Bling
Hired Muscle's Legguards
Hitman's Holster
Made Manacles
Mug's Moxie Jug
"Tiny Pal"
Underboss's Tailored Mantle
Wiseguy's Refused Offer
Zee's Thug HotlineMounts, toys, achievements, transmog
Only rows the journal loot table or an achievement title can prove for this encounter.
Mounts
Prototype A.S.M.R. · The Big G
Toys
Achievements
Heroic: Liberation of Undermine · Liberation of Undermine · Mythic: Cauldron of Carnage · Mythic: Chrome King Gallywix · Mythic: Liberation of Undermine · Mythic: Mug'Zee, Heads of Security · Mythic: Rik Reverb · Mythic: Sprocketmonger Lockenstock · Mythic: Stix Bunkjunker · Mythic: The One-Armed Bandit · Mythic: Vexie and the Geargrinders
Entrance and instance
Liberation of Undermine is a raid in the Adventure Guide. See the Liberation of Undermine database page for the raw journal, map, and loot grid. This guide does not invent coordinates or a walking path.
Related bosses
Player strategy
This page quotes the Adventure Guide. It does not add player strategy such as positioning, assignments, stack or spread calls, or cooldown timings unless that sentence is already in the journal.
Questions
What does the Adventure Guide say about Mug'Zee, Heads of Security?
The two heads of Mug'Zee, Mug and Zee, begin the encounter in a friendly contest to see who is in control.
How many abilities does Mug'Zee, Heads of Security have?
The current datamine lists 18 named abilities on the Mug'Zee, Heads of Security encounter.
What does Mug'Zee, Heads of Security drop?
The Adventure Guide lists 16 drops. Each name links to its TheWoWDB item page. The full table also lives on the Liberation of Undermine database page.
Does Mug'Zee, Heads of Security change on Heroic or Mythic?
Yes. The Adventure Guide adds difficulty sentences on the abilities that change; those sentences are collected in the difficulty section. We do not invent additional Heroic or Mythic strategy.
Does Mug'Zee, Heads of Security drop a mount?
The journal loot table includes Prototype A.S.M.R., The Big G. Each links to its TheWoWDB mount page.
Where does this guide's text come from?
Quoted Adventure Guide sections come from TheWoWDB's retail datamine (client build 12.1.0.69587, ingested 2026-09-01). Player strategy such as positioning, assignments, and cooldown timings is omitted unless that sentence is already in the journal.
Source and build
This page quotes the Adventure Guide. It does not add player strategy such as positioning, assignments, stack or spread calls, or cooldown timings unless that sentence is already in the journal. Quoted sections come from TheWoWDB Adventure Guide datamine (client build 12.1.0.69587, ingested 2026-09-01). Ability names link to first-party spell pages. When a newer retail build is ingested, this page updates with it.