10 Best Vex Build in Borderlands 4

Borderlands 4 is already becoming one of the biggest games out there. The action role-playing game contains many features that make it a top-tier match. Players have an array of amazing characters to choose from, including Vex. She had a rough upbringing that was heightened when she received Siren powers. Her personality comes off as cynical and sarcastic. However, she had to fend for herself, so that makes perfect sense. The best part is that she still believes in helping others, even if it means dealing damage. In this article, we discuss the Best Vex builds in the title.

10. Lifesteal Covenant

Lifesteal setup makes Vex nearly unkillable. Every shot heals, and every status effect refills health. Cataclysm adds elemental firepower while Covenant boosts lifesteal, so bosses melt while you stay topped up. Incarnate heals teammates, and Dead Ringer summons minions to feed more kills into sustain. Combine that with Cataclysm, and your elemental dots heal you while burning enemies alive. The more enemies you tag, the faster your health bar fills. In co-op, you’re the team medic without ever dropping damage. Therefore, it strikes the perfect balance between survival gaming and squad utility.

9. Ultimate Phase Phamiliar

Trouble, Vex’s spectral cat, becomes the star here. Trouble takes center stage here. Fully boosted through Phantasm, the spectral cat taunts enemies, deals splash damage, and grows into a tanky raid companion. Stack Cataclysm for elemental effects, then add Covenant lifesteal so both you and Trouble survive. Dead Ringer summons extra ghost minions, creating full-on chaos as enemies get swarmed. With AOE grenades, Nova shields, and pet-focused class mods, this build shines solo. Solo players especially love this one, since Trouble plays like a full squadmate on her own.

8. Vex Dead Ringer Levelling

Levelling with Dead Ringer is smooth because your Spectre and Reaper minions carry fights while you farm XP safely. Phantasm buffs their damage and respawn speed, letting them shred mobs as you clean up with elemental shots. Adding Covenant lifesteal keeps you alive through long story missions. Trouble becomes an extra distraction once unlocked, making quests easier. Stick to fast-firing elemental guns, and you’ll fly through levels without grinding. Consequently, this build ensures steady, efficient, and enjoyable progression from the early game through the mid-game.

7. Elemental Cataclysm

Elemental Cataclysm is flashy, destructive, and brutally efficient. You want pure Siren flair, Cataclysm delivers. Every shot spreads elemental chains, and every Action Skill adds procs. Incarnate blasts elements, Dead Ringer ghosts spread dots, and Trouble tanks while applying more damage. Maliwan guns with two elements, explosive shields, and grenades, make fights wilder. This build thrives on chain reactions, so bosses and mobs alike burn, shock, or corrode in seconds. Overall, it’s flashy, destructive, and perfect for players who want raw elemental destruction. 

6. Kinetic Witch

Kinetic Witch turns Vex into a melee storm. Phase Covenant links your weapon element to melee attacks, so you punch with shock, fire, or corrosive fists. Cataclysm buffs splash and elemental ticks, while Covenant lifesteal keeps you standing in close quarters. Use weapons that swap elements fast, then chain melee strikes with dashes and Action Skills. Add artifacts that boost melee range and movement for nonstop aggression. Consequently, this build is perfect if you want an aggressive, brawler-style Siren. Ideal for anyone who loves stylish, aggressive combat gaming.

5. Infinite Bleed

This build stacks steady damage that wears enemies down. Phase Covenant links weapon elements to melee, letting bullets and punches double-stack procs. Cataclysm supercharges burn, shock, and corrosive ticks, while Covenant lifesteal keeps you alive mid-spray. With Dead Ringer minions spreading extra effects, mobs melt under endless status chains. Good Weapons are the core of this build. Fast-firing SMGs and shotguns stack damage fastest, while artefacts boosting elemental chance keep the storm rolling. Ultimately, Infinite Bleed stands out because it combines insane DPS with reliable sustain.

4. Blood Shot Endgame

Blood Shot mixes sustain and insane DPS for late-game chaos. Max Cataclysm to chain elemental effects, then lean on Covenant’s lifesteal to survive raid-level pressure. Dead Ringer summons turn into complete DPS machines when augmented right, while Trouble adds utility. Extra skills that spread effects make fights spiral out of control quickly. Artifacts amplifying elemental stacks plus strong class mods push damage even higher. As a result, Blood Shot is ideal for raids, Mayhem, and challenging bosses that demand endurance and firepower. Blood Shot Endgame is the build for players chasing the toughest content in Borderlands 4.

3. Witchy Trigger Finger

This build leans on Vex’s kill skills and critical hits. By stacking crits, you trigger reload speed, gun damage, and extra kinetic status effects without needing kills. Cataclysm and Covenant boost sustain and elemental bleed while skills like Leeching Attunement keep buffs rolling. Pair it with high-crit weapons for insane DPS and constant uptime. Therefore, Witchy Trigger Finger rewards fast aim, aggressive play, and players who love risky but super-rewarding playstyle. That is especially true with Eldritch Blast or Phase Explosion in this classic RPG. The best part is that players are using the Vibe Check capstone. 

2. Summoner

Using the Dead Ringer action skill, the Summoner turns Vex into the leader of a small army of pets. Dead Ringer keeps Specters and Reapers active, while Trouble adds even more field pressure. Phantasm boosts pet health and damage, while Covenant lifesteal heals both you and your summons. Prismatic Ichor adds random elements to attacks, stacking more chaos. With augments like Cursed Blade or Burning Attunement, minions spread extra status effects nonstop. Consequently, Summoner is one of the most fun builds for players who love controlling a squad in Borderlands 4. 

1. Here Comes Trouble

If you enjoy playing games with your friends, then this is the right build for you. It mimics elements of the famous title FL4K, the Beastmaster, from Borderlands 3. The game focuses on Vex’s phase friend Trouble. It’s a cute spectral cat. However, Trouble scales into a monster with Phantasm boosts, and cryo attunement makes the pet’s damage even nastier. With Nova Shields, AOE grenades, and Trouble shredding enemies, mobbing feels effortless. In co-op, your pet helps draw heat while you clean the house. Therefore, Here Comes Trouble sits at the top because it’s both fun and insanely strong.