Explore all the Boss Battles in Borderlands 4, their precise locations, and the legendary drops you will receive after ending their reign.

Borderlands 4 offers you tons of content to engage with. There are over 40 different bosses throughout the game in the form of main missions, side missions, or world types. Boss fights, though challenging, prove to be rewarding due to the XP you earn battling them as well as the legendary weapons they drop after you defeat them.
In this article, we will explore all the different bosses you will encounter in Borderlands 4, their locations, and the rewards for defeating them.
Boss Battles Overview in Borderlands 4

Some bosses could prove challenging. It is especially more frustrating when you manage to drain the health of the boss to a close minimum before ultimately falling to your demise. In such cases, you can make use of the ‘Second Wind’ feature. Successfully killing an enemy when in a downed state will earn you a ‘Second Wind.’ This will allow your character to return to battle while still at critical health but with a full shield.
In Borderlands 4, you will also have the opportunity to replay boss battles. This feature is enabled with the help of Moxxi’s Big Encore machine. With the help of this, you can take on any boss you would have previously defeated in battle. This is especially useful if you wish to farm a boss and earn as much XP as you can from them. To know more about how to use this, you can refer to the link below.
Read: Borderlands 4: How To Replay Boss Fights
List of all Boss Battles in Borderlands 4

Boss | Mission Type | Mission Name | Location | Legendary Drops |
---|---|---|---|---|
Splashzone | Main Mission | Recruitment Drive | Riptide Grotto, Fadefields | Lead Balloon Fireworks Jelly |
Horace | Main Mission | Down and Outbound | Horace’s Oversight, Fadefields | Aegon’s Dream Lucky Clover Whiskey Foxtrot Pacemaker Sho Kunai |
The Oppressor | Main Mission | A Lot To Process | The Killing Floor, Fadefields | Asher’s Rise Onslaught Blood Analyzer Streamer |
Idolator Sol | Main Mission | Rush The Gate | Fortress Indomita, Fadefields | Onslaught Goremaster Golden God Bio-Robot Dancer Technomancer Furnace |
Driller Hole | Main Mission | Unpaid Tab | Queen’s Cradle, Carcadia Burn | Katagawa’s Revenge G.M.R. Fuse |
Callis, The Ripper Queen | Main Mission | Her Flaming Vision | Moon-Called Throne, Carcadia Burn | Queen’s Rest Pandoran Memento Esgrimidor |
Skyspanner Kratch | Main Mission | The Lambent Mines, Terminus Range | Hellfire Linebacker Hoarder | |
Vile Prototype | Main Mission | Dark Subject | Lictor’s Black Site, Terminus Range | Rangefinder King’s Gambit Heavyweight |
VIle Lictor | Main Mission | His Vile Sanctum | Umbrail FOundry, Terminus Ranger | Ruby’s Grasp Super Soldier Blockbuster Undead Eye Instigator Generator Blacksmith |
Moon-Maddened Callis | Main Mission | Another Day, Another Universe | Elpis Orbital Shatterfield, Carcadia Burn | Ohm I Got Gamma Void |
Timekeeper | Main Mission | The Timekeeper’s Order | Upper Dominion, Dominion | Borstel Ballista |
Primordial Guardian Timekeeper | Main Mission | The Timekeeper’s Order | Upper Dominion, Dominion | Plasma Coil Star Helix |
Arjay | Main Mission | Secrets of the Vault | Upper Dominion, Dominion | |
Primordial Guardian Origo | Side Mission | Primordial Vault: Terminus Range | Arch of Origo, Terminus Range | Kaoson Watts 4 Dinner Bottled Lightning Kindered Spirits Buster Atomic Driver Shatterweight |
Vile Ted and the Experiments | Side Mission | Below The Surface | Dominion | Seventh Sense Goalkeeper |
Primordial Guardian Radix | Side Mission | Primordial Vault: Carcadia Burn | Arch of Radix, Carcadia Burn | Anarchy Adrenaline Pump Teen Witch Greenzerker |
Axemaul | Mine Boss | The TOil of Spoiling Vis Abandoned Auger Mine, Dominion | Bod Kill Spring Buzz Axe | |
Bio-Thresher Omega | Side Mission | One Slimy Issue | Lakeside Properties, Dominion | Bugbear Truck |
Mimicron | Bunker Boss | Tipping Point Order Bunker, Fadefields | Luty Madlad Complex Root UAV | |
Fractis | Bunker Boss | The Crawlcroft Order Bunker, Cracadia Burn | Chuck Protean Cell UAV | |
Battle Wagon | Drill Site Boss | The Lowering March Ripper Drill Site, Terminus Range | Bugbear FInnity XXX-L Compleation | |
Core Observer | Bunker Boss | Blacklime Bunker Order Bunker, Fadefields | Bully Divided Focus Defibrillator | |
Leader Willem | Side Mission | The Mole’s Gambit | The Excrucible, Carcadia Burn | Rainbow Vomit Zipper Firepot |
Directive-O | Bunker Boss | Ironwall Resolve Order Bunker, Dominion | Whiskey Foxtrot Bonnie and Clyde Rowan’s Charge | |
The Divisioner | Bunker Boss | The Wireworks Order Bunker, Terminus Range | Sideshow TInged Inkling | |
Foundry Freaks | The Pitted Stain Ripper Drill Site, Fadefields | Chuck Bloody Lumberjack Chaumurky | ||
Meathead Riders | The Old Scrape Ripper Drill Site, Terminus Range | Lucian’s Frank Hellwalker War Paint | ||
Pango and Bango | Drill Site Boss | Tendercage Ripper Drill Site, Carcadia Burn | Stray Prince Harming Phantom Flame | |
Rippa Roadbirds | Drill Site Boss | Saw’s Clench Ripper Drill Site, Carcadia Burn | Wombo COmbo Spinning Blade | |
Skull Orchid | Mine Boss | Embossed Fault Abandoned Auger Mine, Carcadia Burn | Roach Oak-Aged Cask Faulty Detonator | |
Rocken Roller | Mine Boss | Trinket Crevass Abandoned Auger Mine, Carcadia Burn | San Saba Songbird T.K.’s Wave AF1000 | |
Voraxis | Mine Boss | Timid Kyles’ Neglected Opening Abandoned AUger Mine, Fadefields | Darbeast Potato Thrower IV Buoy | |
Shadowpelt | Mine Boss | Whistler’s Maw Abandoned Auger Mine, Terminus Range | Vamoose Sparky Shield Slippy | |
Backhive | Mine Boss | The Claim Abandoned Auger Mine, Fadefields | Stop Gap Cindershelly Triple Bypass | |
Bramblesong | Mine Boss | Bittervein Abandoned Auger Mine, Terminus Range | Convergence Boomslang Disco | |
Sidney Pointylegs | Drill Site Boss | The Prospects Ripper Drill Site, Fadefields | Noisy Cricket Disc Jockey Swarm | |
Genone | Side Mission | Fault Hunting | The Yawning Yard, Carcadia Burn | Oscar Mike Recursive |
Callous Harbinger of Annihilating Death | Bunker Boss | Craven’s Nook Order Bunker, Terminus Range | Hot SLugger Kaleidoscope Atling Gun | |
Sludgemaw | Side Mission | All Charged Up | Watershed Gate, Fadefields | Kickballer Birt’s Bee Onion |
Primordial Guardian Inceptus | Side Mission | Primordial Vault: Fadefields | Arch of Inceptus, Fadefields | Lucky Clover Husky Friend Extra Medium Ravenfire Elementalist Filantropo Avatar |
Bio Bulkhead | Main Mission | One Fell Swoop | Synthetic Nave Facility, Dissected Plateau Region | Budget Deity Waterfall Sho Kunai |
Saddleback and Immortal Boneface | Drill Site Boss | Old Scrape Ripper Drill Site | War Paint Lucian’s Flank Hellwalker |
Also read: All Lopside Collectibles in Borderlands 4

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