
The cynical and sarcastic Vex is not what you'd expect from a Siren in Borderlands 4. Instead of the phase grasp playstyle we've traditionally seen, Vex is actually more like the Beastmaster himself—FL4K—from Borderlands 3. While this new direction makes the best Vex builds in Borderlands 4 harder to pin down, she's got a lot more versatility thanks to it.
Below, I'll go over three of the best Vex builds you can make at max level, one for each of her unique skill trees, as well as a levelling build, so you can make the most out of Borderlands 4's Siren. Of course, I'll also go over how these skills all come together with weapons, class mods, and other gear to reach their full potential.