All Borderlands 4 Bosses in Order: Full Story Boss Guide

Borderlands 4 takes players across the chaotic world of Kairos, where the Timekeeper rules with an army of dangerous lieutenants and monstrous creations. As you progress through the main missions, you’ll face increasingly tougher enemies, from Ripper leaders to mutated beasts and mechanized threats.

If you’re wondering about all Borderlands 4 story bosses and the order in which you’ll encounter them, this guide breaks them down one by one — including their abilities, strategies, and tips to survive.

Also Check: Borderlands 4 Game Length: How Long Does It Take to Beat & 100% Complete BL4?

Also Check: Borderlands 4 Horace Boss Guide: Attacks, Phases, and Legendary Drops

1. Warden Scathe (Guns Blazing Mission)

The very first boss in Borderlands 4, Warden Scathe, appears during the tutorial. While intimidating, he’s not too difficult:

• Attacks: Projectile fire and Synth reinforcements.
• Strategy: Dodge his shots, clear Synths quickly, and wear him down.

2. Splashzone (Recruitment Drive Mission)

Splashzone, a Ripper warlord, commands a ragtag crew in the Fadefields.

• Attacks: Melee charges, weapon slams, ooze pools, and grenades.
• Strategy: Keep your distance, avoid the ooze, and punish him when he recovers.

3. Horace, the Spymaster (Down and Outbound Mission)

Horace is a dangerous Warden-type foe with a two-phase fight.

• Phase 1: Uses shields and projectile barrages. Weak to Shock damage.
• Phase 2: Switches to melee, charging aggressively. Weak to Ignite damage.

4. The Oppressor (A Lot to Process Mission)

A massive jet that attacks from the skies.

• Attacks: Homing missiles, laser beams.
• Strategy: Use cover and accurate long-range weapons to chip it down.

5. Bio-Bulkhead (One Fell Swoop Mission)

A hulking melee Bulkhead variant.

• Immune phase: Protected until you throw Green Locust Canisters.
• Strategy: Keep distance, break immunity, then unload damage.

6. Idolator Sol (Rush the Gate Mission)

One of the first real challenges before leaving Fadefields.

• Abilities: Absorbs minions to heal, immune until hit with Green Locust Canisters.
• Strategy: Eliminate his adds quickly before he regenerates HP.

7. Skyspanner Kratch (Shadow of the Mountain Mission)

A giant mutated bat in Terminus Range.

• Attacks: Sonar screams and swarms of minions.
• Strategy: Focus on dodging sonar attacks while clearing adds to avoid being overwhelmed.

8. Vile Lictor (His Vile Sanctum Mission)

A Lieutenant of the Timekeeper and your first major test.

• Abilities: Projectile storms, teleportation, Spectral Walls.
• Strategy: Stay mobile and anticipate teleport strikes.

9. Driller Hole (Unpaid Tab Mission)

Found in Carcadia Burn’s underground prison.

• Attacks: AOE fire blasts, heavy melee, Ripper support mobs.
• Strategy: Avoid AOE zones, focus on mobility and ranged damage.

10. Callis, The Ripper Queen (Her Flaming Vision Mission)

The Ripper Queen and one of the Timekeeper’s most unpredictable lieutenants.

• Abilities: Fire Orbs, Drone Mines, bomb-carrying Rippers, wall-climbing Laser Nets.
• Strategy: Constant movement is key — watch her limbs and avoid getting trapped.

11. Moon-Maddened Callis (Another Day, Another Universe Mission)

A deadlier, mutated form of the Ripper Queen.

• Abilities: More aggressive attacks, new bomb patterns, arena knockbacks.
• Strategy: Grapple back if pushed off the arena and prioritize dodging over DPS.

12. The Timekeeper (The Timekeeper’s Order Mission)

The final boss of Borderlands 4 and your toughest opponent.

• Phase 1 (The Timekeeper):
• Shields (blue), Armor (yellow), Flesh (red).
• Abilities: Lasers, Golden Wall defense, Blinding Flash, Aerial Assault transitions.
• Phase 2 (Primordial Guardian Timekeeper):
• Abilities: Fragment Scatter, Fragment Matrix explosions, Bounce & Blast, Aerial Annihilation aura.
• Strategy: Survive transitions, manage arena hazards, and keep applying pressure.

Defeating him marks the conclusion of BL4’s main story — but also unlocks endgame content.

Borderlands 4 bosses are as chaotic and unpredictable as the game itself. From Ripper leaders to massive aerial machines, each fight demands a different strategy. Whether you’re after the main campaign or gearing up for endgame and 100% completion, knowing these encounters in advance will give you the edge you need.