The top-tier Jabber, Skag, and Spiderant builds

FL4K the Beastmasterhas always been one of the most versatileBorderlands 3characters, with his ability to match his three powerful Action Skills with a unique and loyal companion creature.

In thisBorderlands 3 FL4K build guide, we’ve laid out the top-tier builds that you can use in the base game to get the most out of this powerful Beastmaster: one forJabber & Fade Away, one forSkag & Gamma Burst, and one forSpiderant & Rakk Attack.

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Borderlands 3 FL4K build guide

Borderlands 3 FL4K build guide

Creating aFL4K buildin Borderlands 3 is, at least in one respect, a more complex undertaking than with most Borderlands 3 builds, because it’s not justyouthat you’re upgrading but also yourpet. And these pets can grow to become quite fantastically powerful by assigning your skill points into the following skill trees:

Like other Borderlands 3 characters, FL4K has an extra skill tree that can be unlocked with the Ultimate Edition. But for the purpose of this guide we’re focusing on the best builds you can create utilising the skill trees found in the base game.

FL4K is often considered to be the go-to Vault Hunter for solo play because of their pet, but the truth is that the flexibility of these skill trees and pets means you can build FL4K however you want. You could choose to ignore upgrading the pet entirely if you wish, and focus on your Action Skills or your damage; or vice versa. The below three FL4K builds will focus on a specific skill tree and pet in order to create completely different (and equally powerful) playstyles.

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If you need a bit of a primer on the various Borderlands 3 characters and classes, look no further than ourBorderlands 3 characters & skill treesguide. If not, let’s skip right ahead to theFL4K builds!

For all that FL4K was advertised as a sniper prior to the release of Borderlands 3, that’s not the way it goes for most people and most builds, probably just because the highly mobile and high-octane nature of combat means you often have no choice but to get right into the thick of it. If sniping is the way you want to play FL4K though, this build is for you. We’re diving deep into the Hunter skill tree, along with a couple of pickups from the other trees as well, in order to create a high-damage build that focuses on maintaining distance from the enemy while constantly critting and sending out powerful Rakk Attacks against anyone who gets too close.

I would first suggest investing in the three right-most skills in the first three tiers of the Stalker tree:Furious AttackandOverclockedwill give you some pretty fantastic early damage, andTurn Tail And Runfurther increases your damage when standing still, while also making you more survivable while on the move - crucial for sharpshooters. After this you should head to the Hunter tree and start investing heavily, beelining fromInterplanetary StalkerthroughAmbush PredatortoTwo F4ng- one of the best skills available to FL4K which is particularly strong with slow-firing high damage guns such as sniper rifles.

At this point I’d go back and put my three points intoPersistence Hunterin the Master skill tree, just for the extra damage boost; and then it’s back to Hunter, because we want to work our way up to the capstone skill,Megavore, which gives you a chance to crit on any part of your target. Combined with crit-based skills such asLeave No Trace,Head Count,The Most Dangerous Game, andGalactic Shadow, you’re going to be dealing mega-damage with your snipes - especially if you find a good strong (probably Jakobs) sniper rifle to go with this build (perhaps one of the ultra-powerfulBorderlands 3 Legendary weapons?).

I’d also highly suggest you get a good Class Mod that overcharges yourGrim Harvestskill, because it’ll both increase your gun damage and give your Rakk Attacks a much-needed boost in damage potential. And the duo augments ofFlock ‘N LoadandRakkceleratewill ensure that any enemies not obliterated immediately by your sniping will last no time at all against the bombardment of your Rakks.

There’s more than one way to build a strong solo FL4K, but one of the most fun is to elevate your pet of choice to god-tier levels of damage and survivability. This you can do thanks to a very balanced combination of the Master and Stalker skill trees. Here we’re going to be using the Skag in tandem with a Gamma Burst that delivers extreme damage and benefits to both your pet and yourself whenever you use it (which will be constantly).

Persistence HunterandFerocityare the first skills you should look to upgrade, as they’ll give you a great early game by increasing both your damage and your pet’s damage quite considerably.Frenzyshould definitely be your next pickup (more damage, yay!), followed by several points inWho Rescued Who?, which is - for the time being - your best bet to avoid your pet dying early on.

At this point we’re going to swap over to the Stalker skill tree, and go throughSelf-Repairing System(a larger health pool is always good) so that we can max out the essentialEager To Impressskill, which will allow us to basically spam our Gamma Burst at every opportunity.All My BFF’sandTurn Tail And Runare great additional pickups for survivability after this, and they’ll allow us to reachHidden Machine, which increases your damage against enemies not targeting you. The idea is that most of them should be targeting your now very tanky and dangerous Skag, leaving you in the clear.

4 points intoRage and Recoverwill drastically increase both FL4K’s and Skag’s tankiness, and will allow you to reach the Stalker Capstone,The Power Inside, which will massively increase your damage potential every time you use Gamma Burst. This is compounded by our Action Skill Augments:Empathic Rage, which increases your damage while Gamma Burst is active; andEndurance, which increases your pet damage and your Gamma Burst duration for every kill that your Skag makes while Gamma Burst is in effect. It’s a fantastic synergy, and it means every time you use Gamma Burst, you can basically just sit back and keep firing from the sidelines while your Skag obliterates everyone in the vicinity. This is a seriously fun build that makes you feel like a true Beastmaster.

I’m not going to talk too much about this build, because it’s not actually mine. This build was designed by YouTuberNickTew, who has released a full 20-minute video (see below) explaining why this FL4K build is so goddamn fantastic. In a nutshell, the build focuses heavily on Gun and Crit damage at almost every conceivable turn, even foregoing the traditional method of investing enough points in a tree to unlock the powerful Capstone skill at the end.

I thought for quite a while about whether I could improve upon this build in any way, but honestly if extreme gun damage is what you’re after, it really doesn’t get much better than this. The combination of theUnblinking EyeandGuerillas In The Mistaugments to give you the maximum possible benefit from Fade Away’s guaranteed crits, the points invested in skills such asHead Count,Two F4ng,Grim Harvest,Persistence Hunter,Overclocked, andThe Fast and the Furryousto give you the most bonkers damage with pretty much any weapon you like. If you’re just after raw DPS potential, here it is.

Take a look at NickTew’s build video below.

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And with that, I think I’ll end this Borderlands 3 FL4K build guide for the time being. But be sure to bookmark this page and check back every so often in case some fantastic new build has been discovered that ensures you get the maximum possible benefit from this deadly Beastmaster.

If you need more help with Borderlands 3 we’ve got other guides you can turn to. Check out ourBorderlands 3 Shift Codespage to get free Golden Keys, or head to our primers on theBorderlands 3 weaponsandLegendary weaponsto bring yourself up to speed. We’ve also got other build guides forAmara,MozeandZane.