Best FL4K builds Level 1 to 72 Mayhem 11 – Borderlands 3

FL4K the Beastmaster

FL4K the Beastmaster is a wandering robot and one of the most flexible playable characters in Borderlands 3. This intrepid robot can command a variety of animals to assist in combat and boasts several skill sets to suit any playstyle in Borderlands 3. 

Our comprehensive Borderlands 3 FL4K builds has all the information you need to play FL4K at his full potential.

FL4K Borderlands 3

A brief presentation of FL4K

The origins of FL4K are shrouded in mystery, but what is known is that they served as an “Indexing Unit” under the command of the “Grand Archivist” prior to the events in Borderlands 3. However, their employment ended when they gained self-awareness and developed a “thirst for murder.” Now, FL4K roams from world to world with a pet companion seeking self-discovery and pursuing “The Hunt” to please “Mistress Death.” 

FL4K is a robot with a bulky and armored body. His head is adorned with glowing green eyes and menacing-looking faceplate. He wears torn and patched clothes, including a hooded cloak and various pouches and belts. FL4K also carries a backpack on its shoulder. Overall, FL4K’s appearance is both intimidating and distinctive, reflecting its unique skills and personality as a robotic Beastmaster.

The Beastmaster’s playing style in Borderlands 3 is focused on utilizing its animal companions in combat to deal with the damage, provide support, and draw enemy fire. Overall, FL4K’s playing style is versatile and flexible, allowing players to adapt to various combat situations for both solo and co-op play.

FL4K the Beastmaster Leveling Build Borderlands 3

In this FL4K leveling guide for Borderlands 3, we are going to harness the power of Master Tree’s top-tier abilities. With this build, your pet becomes a formidable tank and inflicts significant damage to foes, enabling you to eliminate weakened adversaries from a safe distance.

This leveling guide leverages various defensive abilities to bolster your pet’s survivability, even in the face of overwhelming enemy assaults. This build is capable of proficiently handling sizable hordes of enemies, even on the most challenging difficulty levels. Additionally, FL4 K’s healing effects extend to their allies, making them valuable asset in group scenarios. 

The key skills to focus on leveling FL4K for this build includes Gamma Burst Action Skill along with other skills from the Master tree, i.e., Ferocity, Persistence Hunter, Frenzy, Psycho Head On A Stick, Who Rescued Who?, Barbaric Yawp, Shared Sprit, and Pack Tactics. Apart from that, you also need to use a few skills from the Stalker tree, i.e., Self-Repairing System, All My Bff’s, and Sic’ Em, to increase damage and survivability. 

Level 0: Start leveling up

Level 0-2: Select the Gamma Burst action skill and Guard Skag pet.

Level 2-5: Invest 3 points in the Persistence Hunter skill. 

Level 5-10: Invest 5 points on Ferocity skill.

Level 10-11:  Invest 1 point on the Who Rescued Who? skill. 

Level 11-16: Invest 5 points on Frenzy’s skill. 

Level 16-17: Invest 1 point on Psycho Head On A Stick skill. 

Level 17-21: Invest 4 points on Barbaric Yawp skill. 

Level 21: Select Empathic Rage and Endurance Augments. 

Level 21-22: Invest 1 point on Pack Tactics skill. 

Level 22-23: Invest 1 point in the Shared Spirit skill. 

Level 23-24: Invest 1 point on the Mutated Defenses skill. 

Level 24-25: Invest 1 point in Sic’ Em skill.

Level 25-27: Invest 2 points in Self-Repairing System skills.

Level 27-29: Invest 2 points on Furious Attack skill.

Level 29-30: Invest 1 point in All My Bff’s skills. 

At level 30, your FL4K skill tree should look like this:

Beastmaster Borderlands 3
FL4K Leveling Build

Best Mid Game builds for FL4K the Beastmaster BL3

After progressing beyond the early stages of Borderlands 3, players can explore some exciting mid-game FL4K builds. Two top-notch level 50 builds for Beastmaster builds at this stage are FL4K Crit Build and DE4THBRINGER FL4K Build.

FL4K Crit Build

Credit to Chadly

FL4K Crit Build is a popular build in Borderlands 3, designed for players who want to take down bosses and enemies quickly. This Beastmaster build focuses on maximizing critical hit damage to melt any foe in Mayhem Mode, even at level 50.

The build typically revolves around a combination of skills and equipment that enhance FL4 K’s damage output, survivability, and critical hit chance. Skills such as “Head Count” and “Leave No Trace” improve ammo management and increase the chances of critical hits, while “Fade Away” provides temporary invincibility and damage bonuses.

Overall, the FL4K Crit Build is a formidable build that can make quick work of even the toughest bosses and enemies in Borderlands 3. The increased Critical Damage output of this build makes it work for players who are more into solo play. You can also make it work for co-op play by investing in a few other skills like, All My Bff’s. 

FL4K Crit Build


Credit to EpicNNG

The DE4THBRINGER FL4K is a great level 50 build in Borderlands 3 specifically designed for high-level gameplay. This build is focused on using FL4 K’s skills and equipment to deal massive damage to enemies while also providing a high degree of survivability. 

The key to this build is utilizing FL4 K’s “Fade Away” skill, which provides temporary invisibility and increased critical hit damage. This skill can be further enhanced through using key skills like Self-Repairing System, the Eager to Impress, Overclocked, the Lick the Wounds, and The Power Inside skills from the Stalker skill tree. The skills from Master Tree, i.e., Ferocity, Persistence Hunter, He Bites! and Hive Mind, helps you to deal more damage using your pet.  

This build is suitable for both solo and co-op play as it offers high damage output, as well as support skills to revive allies and draw enemies away from teammates using pets. With this build, you can easily take down multiple enemies at once during team play.


Best FL4K the Beastmaster Builds Level 72 Mayhem 11 BL3

Upon reaching level 72 in Borderlands 3, it is crucial to utilize the top-performing end-game builds for FL4K, the Beastmaster. Below are the two most efficient level 72 FL4K builds, designed for both solo and co-op gameplay.

No U FL4K Build

Credit to Quag

The No U Mayhem 10 Shield Damage FL4K Build revolves around dealing heavy shield damage to enemies. This is a remarkably aggressive build that prioritizes shield damage, allowing you to conquer even the toughest content with ease. Additionally, this build offers the flexibility to choose between allies or enemies to assist you in your battles.

This build is designed to deal massive amounts of damage, making it an excellent choice for taking down tough bosses. This build can help take down enemies with heavy shields, making it a valuable asset in co-op play. The best thing about this build is that you can use it to turn your enemies into your allies using the Dominance skill. 

The key skill used in this build is Rakk Attack which helps you to attack enemies and deal Fire Damage. The Augments, Rakkcelerate, and Flock’ N Load make the action skill all the more powerful. You can also deal more Fire Damage with Spiderant Scorcher. Apart from that, this build mainly uses skills from the Hunter tree to increase Critical Hit Damage. It also uses skills from Master Tree to turn your pet into a killing machine. Lastly, it uses a few skills from the Stalker tree for Damage Resistance. 

FL4K No U Build

Best Gears for the No U Build

Weapon 1: Guardian Angel

Weapon 2: Unforgiven

Weapon 3: Hail

Weapon 4: Crit

Grenade: Mitosis Hunter-Seeker

Shield: Messy Breakup

Relic: Spark Plug Deathless

MOD: R4kk P4k

FL4K Borderlands 3 Builds

Lode N Splode FL4K Build

Credit to Alzarith and Quag

The Lode N Splode is an FL4K hybrid build that offers a dynamic gameplay experience compared to typical pet builds, all while ensuring simple handling and powerful damage output. It utilizes FL4 K’s all four skill trees and the Gamma Burst action skill to deal massive damage to enemies while also increasing survivability. The build also relies heavily on pet damage. 

At the heart of this build is the idea of enhancing the pet’s Messy Breakup damage by utilizing an unlimited supply of Plaguebearer shots. This build aims to provide players with a gameplay experience that is more diverse and engaging than traditional pet-focused builds. It is also intended to be user-friendly, with easy-to-understand mechanics and straightforward playstyle.

By utilizing FL4 K’s pet abilities and various weapons and gear, the build is able to deliver consistent and high damage output, making it a viable option for players looking to take on challenging content in the game, whether it be solo play or co-op play. This build is heavily focused on the Trapper skill tree to increase your pet’s shield and critical damage. It also uses skills from Master Tree to make your pet more powerful in the game. 

FL4K Lode N Splode

Best Gears for Lode N Splode Build

Weapon 1: Plaguebearer

Weapon 2: Face-puncher

Weapon 3: Free Radical

Weapon 4: Res

Grenade: Hunter-Seeker

Shield: Messy Breakup

Relic: Victory Rush

MOD: Red Fang

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I'm Ulysses, the founder of, where I share my Borderlands game experiences and bring fans together to discuss their favorite game. Have a BADASS day!
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