TheWoWDBBlackrock Foundry
Gruul Guide
Gruul in Blackrock Foundry, quoted from the Adventure Guide. Database holds the raw abilities and the full loot table.
30-second TL;DR
Adventure Guide says
- Gruul attacks with massive sweeping blows that require the coordinated efforts of multiple players to withstand, and periodically enters a Destructive Rampage, ignoring all targets and continually performing Overhead Smash.
- Tanks: Taunt Gruul into a cluster of players in order to share the damage from Inferno Slice.
- Healers: If afflicted by Petrifying Slam, stay away from allies to avoid collateral damage when Shatter occurs.
- Damage dealers: If afflicted by Petrifying Slam, stay away from allies to avoid collateral damage when Shatter occurs.
Overview
Adventure Guide says
Gruul attacks with massive sweeping blows that require the coordinated efforts of multiple players to withstand, and periodically enters a Destructive Rampage, ignoring all targets and continually performing Overhead Smash.
- If afflicted by Petrifying Slam, stay away from allies to avoid collateral damage when Shatter occurs.
- Players must stand in close proximity to one another in order to share the damage from Inferno Slice.
- If afflicted by Petrifying Slam, stay away from allies to avoid collateral damage when Shatter occurs.
- Players must stand in close proximity to one another in order to share the damage from Inferno Slice.
- Taunt Gruul into a cluster of players in order to share the damage from Inferno Slice.
- During Destructive Rampage, Gruul will continually use Overhead Smash, ignoring his threat on all targets.
- In every difficulty except Raid Finder, quickly taunt Gruul away from players after Inferno Slice to stop Overwhelming Blows from hitting unintended targets.
Tank mechanics
Adventure Guide says
- Taunt Gruul into a cluster of players in order to share the damage from Inferno Slice.
- During Destructive Rampage, Gruul will continually use Overhead Smash, ignoring his threat on all targets.
- In every difficulty except Raid Finder, quickly taunt Gruul away from players after Inferno Slice to stop Overwhelming Blows from hitting unintended targets.
Healer mechanics
Adventure Guide says
- If afflicted by Petrifying Slam, stay away from allies to avoid collateral damage when Shatter occurs.
- Players must stand in close proximity to one another in order to share the damage from Inferno Slice.
DPS mechanics
Adventure Guide says
- If afflicted by Petrifying Slam, stay away from allies to avoid collateral damage when Shatter occurs.
- Players must stand in close proximity to one another in order to share the damage from Inferno Slice.
Boss abilities
| Ability | Adventure Guide | Notes |
|---|---|---|
 Inferno Slice | In Mythic difficulty, if Inferno Slice fails to hit at least 4 targets, Gruul will instantly gain 50 Rage. | |
 Cave In | ||
 Overwhelming Blows | ||
 Flare | ||
 Petrifying Slam | ||
 Shatter | ||
 Overhead Smash | ||
 Destructive Rampage |
Loot
Every name is a TheWoWDB item page. Hover the row for the first-party tooltip.
Bracers of Martial Perfection
Cavedweller's Climbers
Cave Smasher Leggings
Cloak of Unfulfilled Potential
Darklight Necklace
Delver's Belt
Eye of the Gronn
Flare-Eyed Hood
Gaze of the Gronn Killer
Grips of Shackled Power
Gronn-Skin Crown
Gronn-Stitched Greatcloak
Gruul's Lip Ring
Gruul's Smallest Shackles
Inferno-Flame Staff
Meaty Dragonspine Trophy
Phosphorescent Seal
Rockfall Girdle
Runescribed Gronncloak
Spaulders of Reflected Stone
Spelunker's Chestguard
Taner's Terrible Spine
Vest of Forceful FuryMounts, toys, achievements, transmog
Only rows the journal loot table or an achievement title can prove for this encounter.
Mounts
Achievements
Mythic: Beastlord Darmac · Mythic: Flamebender Ka'graz · Mythic: Gruul · Mythic: Hans'gar and Franzok · Mythic: Kromog · Mythic: Operator Thogar · Mythic: Oregorger
Entrance and instance
Blackrock Foundry is a raid in the Adventure Guide. See the Blackrock Foundry 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 Gruul?
Gruul attacks with massive sweeping blows that require the coordinated efforts of multiple players to withstand, and periodically enters a Destructive Rampage, ignoring all targets and continually performing Overhead Smash.
How many abilities does Gruul have?
The current datamine lists 8 named abilities on the Gruul encounter.
What does Gruul drop?
The Adventure Guide lists 23 drops. Each name links to its TheWoWDB item page. The full table also lives on the Blackrock Foundry database page.
Does Gruul change on Heroic or Mythic?
The current Adventure Guide text for this encounter does not include separate Heroic or Mythic sentences we can quote. If a later client build adds them, they appear here automatically.
Does Gruul drop a mount?
The journal loot table includes Ironhoof Destroyer. 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.