Updated: Apr 15, 2026

Borderlands 4Nightmare Rift

Source Type
Mini-Boss
Location
DLC 1 Wide
Quest Type
Quest Giver

Note:

Nightmare Rifts randomly spawn at set locations on the Whispering Glacier.
Inside, one of these 12 Mini-Bosses appears:

Bitterlight
Bone Boogie
Botpopper
Fulgur
Ice Maw (Main Quest: On Icebound Shores Abandoned)
Krag'thulu
Kraggula
Ol' Thrash (Side Quest: Ice Fishing)
Oldbeard Worldthroat
Skullfire
Slithertongue
Thresh O' War

Description:

Nightmare RiftLocation & Map

DLC 1 Wide

Nightmare RiftLoot Pool

Nightmare Rift - Quest Rewards

SMG

Falke

Nightmare Rift Boss

9%

Bonus Chance: +2% × UVH
Phosphene: 0.3% + 0.1% × UVH
Big Encore: 30%, Phosphene: 1.5%

Sniper

Fearstalker

Nightmare Rift Boss

9%

Bonus Chance: +2% × UVH
Phosphene: 0.3% + 0.1% × UVH
Big Encore: 30%, Phosphene: 1.5%

Shotgun

Unstable Kor

Nightmare Rift Boss

9%

Bonus Chance: +2% × UVH
Phosphene: 0.3% + 0.1% × UVH
Big Encore: 30%, Phosphene: 1.5%

Heavy

Ichor

Nightmare Rift Boss

9%

Bonus Chance: +2% × UVH
Big Encore: 30%

Vex

Configuration

Nightmare Rift Boss ^Vex

6.75%
Nightmare Rift Boss ^others

0.56%

‍Bonus Chance^Vex: +1.5% × UVH
Bonus Chance^others: +0.125% × UVH
Big Encore^Vex: 22.5%
Big Encore^others: 1.875%

C4SH

Gamer

Nightmare Rift Boss ^C4SH

6.75%
Nightmare Rift Boss ^others

0.56%

Bonus Chance^C4SH: +1.5% × UVH
Bonus Chance^others: +0.125% × UVH
Big Encore^C4SH: 22.5%
Big Encore^others: 1.875%

Harlowe

Phlebotomist

Nightmare Rift Boss ^Harlowe

6.75%
Nightmare Rift Boss ^others

0.56%

‍Bonus Chance^Harlowe: +1.5% × UVH
Bonus Chance^others: +0.125% × UVH
Big Encore^Harlowe: 22.5%
Big Encore^others: 1.875%

Rafa

Reaparición

Nightmare Rift Boss ^Rafa

6.75%
Nightmare Rift Boss ^others

0.56%

Bonus Chance^Rafa: +1.5% × UVH
Bonus Chance^others: +0.125% × UVH
Big Encore^Rafa: 22.5%
Big Encore^others: 1.875%

Amon

Tempest

Nightmare Rift Boss ^Amon

6.75%
Nightmare Rift Boss ^others

0.56%

Bonus Chance^Amon: +1.5% × UVH
Bonus Chance^others: +0.125% × UVH
Big Encore^Amon: 22.5%
Big Encore^others: 1.875%

Sources in DLC 1 Wide

Nightmare Rift

Mini-Boss

Nightmare Rift related Sources

Nightmare Rift doesn't have any related Sources entered!