Best Vex (Siren) Build and Leveling Guide
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This is a build guide for Vex the Siren effectively utilizing the Phase Phamiliar summon in Borderlands 4. See the best build, skills, guns, and gear to use for Vex, along with a leveling guide and character playstyle here!
| All Vex Guides | |
|---|---|
| Leveling Build | Vex Cosmetics | Boss Farm Build | Bleed Build |
| Vex Skill Trees and Voice Actor | |
Best Vex (Siren) Build
| Jump to a Section! | |||||
|---|---|---|---|---|---|
| Skill Tree | Skill Progression | Weapons | |||
| Class Mod | Enhancements | ||||
Vex Best Skill Tree and Action Skill
| Skill Tree |  Here Comes Trouble |
|---|---|
| Action Skill: Phase Phamiliar | |
The Here Comes Trouble tree with the Phase Phamiliar action skill is our pick for the best Siren build. This skill tree focuses on survivability through healing and overshields with Kill Skills while steadily ramping up your damage with guns, ordnances, and your loyal summon, Trouble.
With your Minion, you can tear through enemy hordes using Trouble alongside your guns and ordnance. Trouble also draws plenty of enemy aggro, giving you more room to survive and control the battlefield.
Vex Best Skills
| Jump to a Section! | ||
|---|---|---|
| Skill Tree | Skill Progression | |
| Passives | Capstone | |
Best Passive Skills
| Skill Tree | Priority Skills | ||
|---|---|---|---|
| Here Comes Trouble |  Grave Sustenance Kill Skill. Restore a percentage of Action Skill Duration.  Grave Command Kill Skill. Restore a percentage of Trouble's Command Skill Cooldown and Respawn Cooldown.  Yowl and Bay Vex's Minion(s) gain increased Maximum Health Capacity. Vex gains increased Gun Damage for a Duration after Commanding Trouble.  Vorpal Fiends Vex and her Minion(s) gain Critical Hit Damage.  Shocking Attunement Attunement Skill. While Vex is Attuned to Shock, she gains increased Movement Speed and Gun Damage while moving. Effects persist for a Duration after Attunement is switched.  Infusion When Vex uses a Repkit, she and her Minion(s) gain Bonus Damage with Guns and Melee Damage for a Duration. The Bonus Damage's Elemental Type is based on Vex's currently-equipped Attunement. |
| Skill Tree | Priority Skills | ||
|---|---|---|---|
 Vexcalation |  Guns and Needles Kill Skill. Restores Repkit Cooldown.  Grave Sights Kill Skill. Vex gains increased Critical Hit Damage and Gun Handling. This effect can stack.  Fiendish Invigoration When Vex uses a Repkit, she and her Minion(s) gain increased Movement Speed and Fire Rate for a Duration.  Channeling Vex gains increased Action Skill Duration and Attunement Duration.  Target Prescience Vex's Gun Damage gains Critical Hit Chance against any part of enemies. |
Best Passive Skills
| Recommended Skill Progression | |||
|---|---|---|---|
| Grave Sustenance Kill Skill. Restore a percentage of Action Skill Duration. Lvl 2 | Grave Sustenance Kill Skill. Restore a percentage of Action Skill Duration. Lvl 3 | Grave Sustenance Kill Skill. Restore a percentage of Action Skill Duration. Lvl 4 | Grave Sustenance Kill Skill. Restore a percentage of Action Skill Duration. Lvl 5 |
| Grave Sustenance Kill Skill. Restore a percentage of Action Skill Duration. Lvl 6 | Yowl and Bay Vex's Minion(s) gain increased Maximum Health Capacity. Vex gains increased Gun Damage for a Duration after Commanding Trouble. Lvl 7 | Grave Command Kill Skill. Restore a percentage of Trouble's Command Skill Cooldown and Respawn Cooldown. Lvl 8 | Yowl and Bay Vex's Minion(s) gain increased Maximum Health Capacity. Vex gains increased Gun Damage for a Duration after Commanding Trouble. Lvl 9 |
| Yowl and Bay Vex's Minion(s) gain increased Maximum Health Capacity. Vex gains increased Gun Damage for a Duration after Commanding Trouble. Lvl 10 | Yowl and Bay Vex's Minion(s) gain increased Maximum Health Capacity. Vex gains increased Gun Damage for a Duration after Commanding Trouble. Lvl 11 | Yowl and Bay Vex's Minion(s) gain increased Maximum Health Capacity. Vex gains increased Gun Damage for a Duration after Commanding Trouble. Lvl 12 | Grave Command Kill Skill. Restore a percentage of Trouble's Command Skill Cooldown and Respawn Cooldown. Lvl 13 |
| Vorpal Fiends Vex and her Minion(s) gain Critical Hit Damage. Lvl 14 | Grave Command Kill Skill. Restore a percentage of Trouble's Command Skill Cooldown and Respawn Cooldown. Lvl 15 | Vorpal Fiends Vex and her Minion(s) gain Critical Hit Damage. Lvl 16 | Shocking Attunement Attunement Skill. While Vex is Attuned to Shock, she gains increased Movement Speed and Gun Damage while moving. Effects persist for a Duration after Attunement is switched. Lvl 17 |
| Shocking Attunement Attunement Skill. While Vex is Attuned to Shock, she gains increased Movement Speed and Gun Damage while moving. Effects persist for a Duration after Attunement is switched. Lvl 18 | Shocking Attunement Attunement Skill. While Vex is Attuned to Shock, she gains increased Movement Speed and Gun Damage while moving. Effects persist for a Duration after Attunement is switched. Lvl 19 | Shocking Attunement Attunement Skill. While Vex is Attuned to Shock, she gains increased Movement Speed and Gun Damage while moving. Effects persist for a Duration after Attunement is switched. Lvl 20 | Shocking Attunement Attunement Skill. While Vex is Attuned to Shock, she gains increased Movement Speed and Gun Damage while moving. Effects persist for a Duration after Attunement is switched. Lvl 21 |
| Guns and Needles Kill Skill. Restores Repkit Cooldown. Lvl 22 | Guns and Needles Kill Skill. Restores Repkit Cooldown. Lvl 23 | Infusion When Vex uses a Repkit, she and her Minion(s) gain Bonus Damage with Guns and Melee Damage for a Duration. The Bonus Damage's Elemental Type is based on Vex's currently-equipped Attunement. Lvl 24 | Infusion When Vex uses a Repkit, she and her Minion(s) gain Bonus Damage with Guns and Melee Damage for a Duration. The Bonus Damage's Elemental Type is based on Vex's currently-equipped Attunement. Lvl 25 |
| Infusion When Vex uses a Repkit, she and her Minion(s) gain Bonus Damage with Guns and Melee Damage for a Duration. The Bonus Damage's Elemental Type is based on Vex's currently-equipped Attunement. Lvl 26 | Infusion When Vex uses a Repkit, she and her Minion(s) gain Bonus Damage with Guns and Melee Damage for a Duration. The Bonus Damage's Elemental Type is based on Vex's currently-equipped Attunement. Lvl 27 | Infusion When Vex uses a Repkit, she and her Minion(s) gain Bonus Damage with Guns and Melee Damage for a Duration. The Bonus Damage's Elemental Type is based on Vex's currently-equipped Attunement. Lvl 28 | Guns and Needles Kill Skill. Restores Repkit Cooldown. Lvl 29 |
| Grave Sights Kill Skill. Vex gains increased Critical Hit Damage and Gun Handling. This effect can stack. Lvl 30 | Grave Sights Kill Skill. Vex gains increased Critical Hit Damage and Gun Handling. This effect can stack. Lvl 31 | Fiendish Invigoration When Vex uses a Repkit, she and her Minion(s) gain increased Movement Speed and Fire Rate for a Duration. Lvl 32 | Fiendish Invigoration When Vex uses a Repkit, she and her Minion(s) gain increased Movement Speed and Fire Rate for a Duration. Lvl 33 |
| Fiendish Invigoration When Vex uses a Repkit, she and her Minion(s) gain increased Movement Speed and Fire Rate for a Duration. Lvl 34 | Fiendish Invigoration When Vex uses a Repkit, she and her Minion(s) gain increased Movement Speed and Fire Rate for a Duration. Lvl 35 | Fiendish Invigoration When Vex uses a Repkit, she and her Minion(s) gain increased Movement Speed and Fire Rate for a Duration. Lvl 36 | Target Prescience Vex's Gun Damage gains Critical Hit Chance against any part of enemies. Lvl 37 |
| Target Prescience Vex's Gun Damage gains Critical Hit Chance against any part of enemies. Lvl 38 | Target Prescience Vex's Gun Damage gains Critical Hit Chance against any part of enemies. Lvl 39 | Target Prescience Vex's Gun Damage gains Critical Hit Chance against any part of enemies. Lvl 40 | Target Prescience Vex's Gun Damage gains Critical Hit Chance against any part of enemies. Lvl 41 |
| Vorpal Fiends Vex and her Minion(s) gain Critical Hit Damage. Lvl 42 | Vorpal Fiends Vex and her Minion(s) gain Critical Hit Damage. Lvl 43 | Vorpal Fiends Vex and her Minion(s) gain Critical Hit Damage. Lvl 44 | Channeling Vex gains increased Action Skill Duration and Attunement Duration. Lvl 45 |
| Channeling Vex gains increased Action Skill Duration and Attunement Duration. Lvl 46 | Channeling Vex gains increased Action Skill Duration and Attunement Duration. Lvl 47 | Channeling Vex gains increased Action Skill Duration and Attunement Duration. Lvl 48 | Channeling Vex gains increased Action Skill Duration and Attunement Duration. Lvl 49 |
| Grave Sights Kill Skill. Vex gains increased Critical Hit Damage and Gun Handling. This effect can stack. Lvl 50 | |||
From levels 2–16, focus on the passives in the Here Comes Trouble tree that buff your Summon, survivability, Kill Skill bonuses, and raw damage. These make Trouble incredibly powerful, especially during its Badass form.
At level 17, take the Hexus Nexus Augment, then start investing in Shocking Attunement, to rush unlocking your Unsealed Capstone.
As you approach the level cap, continue leveling passives and Kill Skills that enhance Repkits. Pick up Guns and Needles, and Fiendish Invigoration in the Vexcalation tree for more Repkit skills that synergize extremely well with Infusion.
Vex Best Augment
| Lvl 6 | Lvl 16 |
|---|---|
 Blink Strike
|
 Hexus Nexus
|
In the early game, use Blink Strike to finish off enemies below 50% HP. Later, swap it for Hexus Nexus, to draw aggro, allowing you to shoot at enemies freely.
Hexus Nexus effectively turns Trouble into a much stronger tank and crowd-control tool. Thanks to the max health, healing, and overshield passive skills invested, Trouble will stay healthy through most fights despite taking much of the aggro.
Vex Best Capstone
 Unsealed
|
||
| Tree |
Here Comes Trouble
(Branch 3) |
|
|---|---|---|
| Effect | ||
| Trouble will now Mark his current target, causing them to take increased Gun Damage from Vex. Kill Skill. When a Marked enemy is killed, Trouble gains a Stack of Unsealed for a Duration, granting Health Regeneration and increased Damage. While Phase Phamiliar is active, Unsealed effects are doubled. This effect can stack. | ||
Unsealed allows Trouble to mark enemies and receive +50% Gun Damage from Vex, making it an exceptional skill especially against Bosses and Badasses.
Command Trouble to attack enemies, then use a Repkit to stack multiple buffs, allowing you to blitz through even the tankiest enemies!
Vex Best Weapons
| Jump to a Section | |
|---|---|
| Best Manufacturer | Best Weapon Type |
Best Weapon Type for Vex: SMGs
SMGs are Vex’s best weapon choice. They complement her fast-paced playstyle as well, sticking close to Trouble and wreaking havoc up close.
Best Manufacturer for Vex: Maliwan
Maliwan weapons and licensed parts pair great with Vex, allowing Vex to make full use of Infusion, and receiving additional stats when using Shock Weapons from your Skills.
Vex Best Class Mod
Teen Witch
| Class Mod | Effects |
|---|---|
| Teen Witch |
Recommended Skills:
Yowl and Bay Vex's Minion(s) gain increased Maximum Health Capacity. Vex gains increased Gun Damage for a Duration after Commanding Trouble.
Vorpal Fiends Vex and her Minion(s) gain Critical Hit Damage.
Infusion When Vex uses a Repkit, she and her Minion(s) gain Bonus Damage with Guns and Melee Damage for a Duration. The Bonus Damage's Elemental Type is based on Vex's currently-equipped Attunement.
|
| Legendary Bonus | When Vex has Maximum Health, her Lifesteal partially applies to Shields. When Vex has Maximum Shield, her Lifesteal partially grants Overshield. |
Vex Best Enhancement Mods
Maliwan Enhancements
| Enhancement | Effects |
|---|---|
| Maliwan Enhancement |
・Synthesizer - Guns with Maliwan-licensed parts have +25% Status Effect Damage ・Transfuser - On kill, Guns with Maliwan-licensed parts spread their active Status Effect to up to 3 nearby targets. |
Equipping a Maliwan Enhancement with either Synthesizer or Transfuser synergize well with this build since it gives Vex and Trouble additional Status Effect Damage.
Transfuser is a
Vex (Siren) Leveling Guide
Use Action Skill as Often as Possible
Using Here Comes Trouble as often as possible allows you to capitalize on Trouble's Badass Form, which should be enough to take on most normal enemies.
This allows you to run around the battlefield and use your guns to focus on other enemies, making clearing areas faster and more efficient.
Look For Order Repkits
As you approach the later stages of the build, start looking for Repkits with Order Licensed Parts, since these give you 2 Charges of your Repkit.
This improves Vex' survivability, while also giving you two charges to proc your buffs from Infusion.
Complete Side Missions and Bounties
To farm EXP efficiently, accept Side Missions and Bounties whenever possible, instead of just aimlessly wandering the map.
Side Missions and Bounties reward you with EXP upon completion, and most of these require you to fight various enemies, allowing you to gain EXP from multiple sources per mission.
Best Vex (Siren) Build Overview
Here Comes Trouble Summon Build
| Skills | |||||
|---|---|---|---|---|---|
 Phase Phamiliar |
Guns and Needles Kill Skill. Restores Repkit Cooldown.
Grave Sights Kill Skill. Vex gains increased Critical Hit Damage and Gun Handling. This effect can stack.
Grave Sustenance Kill Skill. Restore a percentage of Action Skill Duration.
Fiendish Invigoration When Vex uses a Repkit, she and her Minion(s) gain increased Movement Speed and Fire Rate for a Duration.
Grave Command Kill Skill. Restore a percentage of Trouble's Command Skill Cooldown and Respawn Cooldown.
Yowl and Bay Vex's Minion(s) gain increased Maximum Health Capacity. Vex gains increased Gun Damage for a Duration after Commanding Trouble.
Channeling Vex gains increased Action Skill Duration and Attunement Duration.
Target Prescience Vex's Gun Damage gains Critical Hit Chance against any part of enemies.
Vorpal Fiends Vex and her Minion(s) gain Critical Hit Damage.
Shocking Attunement Attunement Skill. While Vex is Attuned to Shock, she gains increased Movement Speed and Gun Damage while moving. Effects persist for a Duration after Attunement is switched.
Infusion When Vex uses a Repkit, she and her Minion(s) gain Bonus Damage with Guns and Melee Damage for a Duration. The Bonus Damage's Elemental Type is based on Vex's currently-equipped Attunement.
|
||||
| Best Weapon Type | Best Manufacturer | ||||
| SMG | Maliwan | ||||
This build centers on the Phase Phamiliar action skill, along with passives that boost survivability and damage. Equip SMGs with Vex to focuse on fast-paced close-range combat, and take advantage of Maliwan weapons and accessories for their powerful elemental effects.
Best Vex (Siren) Build Playstyle
Summon-Focused Damage Playstyle
With the Here Comes Trouble skill tree, your Phase Phamiliar summon Trouble serves as a key source of both damage and utility. Throughout the story, Trouble remains a dependable ally, helping you level quickly and cut down enemies regardless of your loot quality.
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How come this build uses only SMG's and not AR's (Assault Rifles), or a mixture of the 2?? I love using a mixture of all the guns except the shotguns. I know shotguns are for up close