Liberation of Undermine

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Boss abilities and loot tables from Blizzard's own journal, boss by boss.

Despite the best efforts of the united cartels, Jastor Gallywix has holed himself away in The Gallagio and called in every favor ever owed to him... leaving a mountain of would-be oppressors between the goblins of Undermine and the Chrome King. Gazlowe and the rest of goblinkind will need to find their way into the casino to rid themselves of Gallywix for good.

Written notes for this instance are a later milestone. Everything on this page comes from Blizzard's journal data.

Expansion: The War Within
Minimum Level: 80
Modes: Raid Finder, Normal, Heroic, Mythic

Bosses

1. Vexie and the Geargrinders

Vexie Fullthrottle has been paving a path of terror through the hearts of anyone her gang encounters. Answering Gallywix's call for aid, she and her crew are here to repay an old favor, and add a few new grease stains to Undermine's streets.

Abilities

Overview
The Geargrinder begins the encounter encased in [Protective Plating], slowly generating energy in preparation for [Unrelenting CAR-nage]. While atop her war-tank, Vexie calls in Geargrinder Bikers to assist her. When a biker is defeated they surrender their ride, allowing players to unleash a [Blaze of Glory] and removing an application of [Protective Plating]. Once all [Protective Plating] is rem…
Stage One: Fury Road
Stage Two: Pit Stop

Loot

2. Cauldron of Carnage

Throughout history there have been many epic wars, but none more explosive than the rivalry between the galvanic gorilla Torq the Tempest, and the molten mechasaur Flarendo the Furious. Tonight, all bets are off when these two champions clash in the cauldron for a showdown that threatens to tear Undermine in two! Witness the carnage or be the shame of goblin kind.

Abilities

Overview
Flarendo and Torq put on a show for the audience, throwing [Scrapbombs] and afflicting arena combatants with [Static Charge]. Upon reaching 100 energy, Flarendo and Torq come together in a [Colossal Clash]!
Colossal Clash
Tiny Tussle
Raised Guard
King of Carnage
Flarendo the Furious

Loot

3. Rik Reverb

Rik Reverb loves the boom of an explosion, the crackle of a firework and most importantly, the sound of his own voice. From his flying sonic resonator, Rik serves as Gallywix's partying promoter by enthralling the citizens of Undermine with addictive and deadly goblin beats.

Abilities

Overview
Rik Reverb places entrancing amplifiers around the yard during [Amplification]. Upon reaching full power, the amplifiers go [Haywire]. Upon reaching 100 energy, Rik unleashes [Blaring Drops] from his sonic resonator and causes each amplifier to [Blowout].
Stage One: Party Starter
Stage Two: Hype Hustle!
Rik encases himself in a barrier of sound as he overloads his amplifiers.

Loot

4. Stix Bunkjunker

It could be said that no city service is more essential than garbage collection... or at least that's what Stix Bunkjunker would like you to believe. Stix and his cleanup crew have been finding inventive ways to dispose of the city's unwanteds and unmentionables for as long as anyone can remember.

Abilities

Overview
Stix assaults the players while slowly gaining energy. Upon reaching 100 energy Stix uses [Electromagnetic Sorting], pulling [Garbage Piles] and [Discarded Doomsplosives] from the landfill while selecting several players to become [Rolling Rubbish]. Eventually, Stix forces his mech into [Overdrive] and operates at [Maximum Output] until defeated.
Electromagnetic Sorting
Cleanup Crew
Stix calls in his Cleanup Crew to help dispose of unwelcome visitors.
Incinerator
Demolish
Meltdown

Loot

5. Sprocketmonger Lockenstock

As one of Gallywix's top minds, Sprocketmonger Lockenstock cannot say no to innovation, meaning that his list of inventions stretches far longer than the conveyor belts in his refinery. Constantly looking to simultaneously cut both corners and costs, Lockenstock's always searching for new markets to test out his gadgets.

Abilities

Overview
Sprocketmonger Lockenstock prepares a demonstration for the players while slowly gaining energy. Conveyor belts around the factory produce explosive new technology for Lockenstock to [Activate Inventions!] . Upon reaching 100 energy, Lockenstock prepares a [Beta Launch] of an improved contraption, infusing it with void powers before renewing his assault.
Stage One: Assembly Required
Stage Two: Research and Destruction

Loot

6. The One-Armed Bandit

The One-Armed Bandit is the premiere slot machine in Gallywix's casino. All the delightful device asks is that you play fairly and don't cheat. The rules by which it determines this are an enigmatic mystery, although the one-armed punishment it dispenses cannot be missed.

Abilities

Overview
The One-Armed Bandit assaults players while slowly gaining energy. Upon reaching 100 energy, it uses [Spin to Win!] to call upon Reel Assistants bearing various symbol Tokens. Defeating these assistants and depositing their tokens within the One-Armed Bandit determines the result. After all of the valid combinations have been rolled, the One-Armed Bandit overloads and takes control of its own re
Stage One: That's RNG, Baby!
Stage Two: This Game Is Rigged!

Loot

7. Mug'Zee, Heads of Security

Buddies from the day they were born, Mug'Zee's two heads are the topper of a giant hulk of an ogre enforcer, specifically hired by Gallywix to oversee his casino's day-to-day activities. In recent weeks, Mug'Zee's been reassigned to keep anyone and everyone out of the Gallagio's innermost chambers.

Abilities

Overview
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 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.
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
Mug'Zee joins forces as the Head Honcho and gains access to all of their abilities from Stage One.

Loot

8. Chrome King Gallywix

Having taken a 'strategic retreat,' Jastor Gallywix holed up in the halls of the Gallagio. Whatever Gallywix has been working on, it's guaranteed to be powerful, deadly, and capable of crushing any who oppose him.

Abilities

Overview
Gallywix gains energy over time, activating The House of Chrome's [Giga Coils] at max capacity. [Charged Giga Bomb]s brought to Giga Controls trigger a [Giga Bomb Detonation]. This causes a [Control Meltdown] which interrupts Gallywix's [Giga Coils]. Upon losing both Giga Controls a [Sabotage Zone] forms. Additionally, throughout the encounter Gallywix calls in the most overpaid Darkfuse Cronies
Stage One: The House of Chrome
"Take a good look at what gold and goblins can getcha." Cornered in The House of Chrome Gallywix stands ready to blast foes.
Stage Two: Mechanical Maniac
"Supply and demand! Deal with it!" Gallywix moves about The House of Chrome calling in Darkfuse cronies.
Intermission: Docked and Loaded
Upon reaching 50% health Gallywix drops into the arena [Cratering] any in his way, gaining [Armageddon-class Plating] and then casts [Total Destruction!!!] until interrupted.
Stage Three: What an Arsenal!
"You certainly don't get your likeness carved into the side of a mountain by letting others push you around" Gallywix continues to pummel his enemies with his upgraded arsenal.
Intermission: Docked and Loaded
Gallywix drops into the arena [Cratering] any in his way, gaining [Armageddon-class Plating] and then casts [Total Destruction!!!] until interrupted.

Loot

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Data from patch 12.1.0. Game data provided by Blizzard Entertainment through the Battle.net API.