Hey, it’s great to see another Rover diving deep into Wuthering Waves! Mortefi has been a staple in my roster since day one, and I’m thrilled to share how I’ve been building him in 2026. Even though the game has gone through several major updates by now, his core kit remains unchanged: a fusion pistol wielder who shines as an off-field damage dealer and a team buffer. Are you struggling to find the right echo combination or torn between weapon choices? Don’t worry—I’ve got you covered. Let’s break down the absolute best Mortefi build that still dominates the current meta.
First things first: Mortefi’s value lies in his Resonance Liberation. That’s the money maker. It calls down a barrage of coordinated fusion beams every time your active Resonator lands a hit, and the damage scales with Mortefi’s ATK and Fusion DMG. So naturally, our goal is to maximize that off-field pressure while ensuring he can use his Liberation on cooldown. Pretty straightforward, right? But how do we squeeze every last drop of damage out of this 4-star unit? Let’s get into the specifics.
Weapon Choices: From Budget to Best in Slot
My weapon recommendations have stood the test of time because Mortefi doesn’t need flashy on-field stats—he craves consistency and energy. I’ve tested every pistol released up to version 2.3, and here’s the ranking that still holds strong in 2026:
| Priority | Weapon | Why It Works |
|---|---|---|
| ⭐⭐⭐⭐⭐ | Static Mist | The undisputed king. Its high base ATK and Energy Regen substat are a perfect match. The passive increases the next Resonator’s ATK after using an Outro Skill, which Mortefi can trigger effortlessly. If you have this 5-star beauty, stop reading this table and use it. |
| ⭐⭐⭐⭐ | Cadenza | A fantastic 4-star alternative that boosts Energy Regen when off-field. Its passive aligns beautifully with Mortefi’s playstyle—swap in, use your Liberation, swap out, and enjoy the regen. This is my go-to for free-to-play players. |
| ⭐⭐⭐ | Pistols of Night | A solid stat stick if you’re starting out. It provides a decent base ATK and a conditional ATK buff. Not as specialized, but will carry you through early exploration. |
| ⭐⭐ | Undying Flame | Extra Fusion DMG? Yes, please! But its passive requires you to take damage to activate, which clashes with the idea of Mortefi staying safe off-screen. Use only if you have no other options. |
| ⭐ | Novaburst | A generic pistol with no synergy. I’d recommend crafting Cadenza over investing in this. |
If you’re wondering, “Why not a full DPS weapon with Crit stats?” — well, because Mortefi’s off-field hits can’t reliably crit unless we build for it, but his energy requirements are so steep that sacrificing the substat often leads to 10+ seconds of downtime. And downtime on his Liberation? That’s raw team damage left on the table. So trust me, prioritize Energy Regen and ATK on your weapon.
Echo Sets: Molten Rift, Moonlit Clouds, or Both?
Now for the fun part: echoes. After countless hours in the tacet fields, I’ve settled on a hybrid approach that gives Mortefi both respectable personal damage and valuable team support. The two Sonata Effects you should be looking at are Molten Rift and Moonlit Clouds, but you don’t need a full 5-piece of either. That’s right—mixing them works wonders.
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Molten Rift (2-piece): +10% Fusion DMG. That’s a direct boost to every beam in Mortefi’s Liberation, plus his Resonance Skill if you ever need a quick burst.
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Moonlit Clouds (2-piece): +10% Energy Regen. This directly reduces downtime. With the right substats, you’ll hit 150%+ Energy Regen effortlessly.
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Moonlit Clouds (5-piece): After using your Outro Skill, the next Resonator gets a 22.5% ATK buff. Mortefi’s Outro already reduces incoming damage, so adding a powerful offensive buff makes him a fantastic setup bot for your main DPS.
I usually run a 2-piece Molten Rift with a 2-piece Moonlit Clouds, and then either a third piece of Moonlit to activate the 5-set when my team needs that ATK spike, or I stay flexible. It depends on your main DPS. For example, if I’m supporting Encore or Changli, the Fusion DMG from Molten Rift’s 2-piece is more beneficial. But if I’m buffing a Jiyan or Rover, I lean toward the Moonlit 5-piece for the universal ATK boost.
Image below shows my echo loadout from back when I first optimized him—still relevant today, though I’ve swapped pieces for better substats over time.
Echo Main Stats and Substats: The Non-Negotiables
Have you ever looked at an echo with a godly substat spread and then sighed at the main stat? We’ve all been there. For Mortefi, you must be strict:
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Cost 4: CRIT Rate or CRIT DMG. Which one? Ideally balance them. Since Mortefi doesn’t ascend with Crit, I aim for a Crit Rate body if my substats lack it. But any Crit main stat is a huge win.
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Cost 3: Energy Regen. Yes, I know Fusion DMG looks tempting, but trust me—you need that Liberation rotation. I can’t stress this enough. If your Energy Regen is below 130% with the 2-piece Moonlit, you’ll feel the pain.
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Cost 1: ATK%. Simple and effective.
For substats, the priority is: Energy Regen (until 150%+) > CRIT Rate/DMG > ATK% > Fusion DMG. Don’t sleep on flat ATK; it’s a nice cherry on top. I’ve trashed hundreds of echoes chasing double Crit and Energy Regen. My current Mortefi sits at 68% CRIT Rate, 170% CRIT DMG, and 157% Energy Regen, and his Liberation is always ready before the cooldown ends.
Why such a focus on Energy? Because his Liberation costs 125 energy and lasts only 10 seconds with a 18-second cooldown. That means you have an 8-second window to refill it. Without substantial Energy Regen, you’ll be staring at that empty gauge, and your main DPS loses their most reliable backup. So, when in doubt, Energy Regeneration wins.
Team Synergy and Rotation Tips
A build isn’t complete without a team, right? Mortefi slots into any composition that has a fast-hitting main DPS. My personal favorites in 2026 are:
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Encore (Main DPS) / Mortefi / Baizhi – Classic dual Fusion. Encore’s rapid combos proc Mortefi’s beams constantly, and Moonlit buff amps her damage further.
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Rover (Spectro) / Mortefi / Verina – A surprisingly smooth rotation. Rover’s Liberation into skill then swap to Mortefi for his Liberation, back to Rover, and watch the explosions.
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Jiyan / Mortefi / Shorekeeper – Wait, you have Shorekeeper? She’s insane with Mortefi because her field time is so short. But this team makes Jiyan an absolute monster.
Rotation kernel: Start with your healer/buffer, switch to Mortefi, pop his Resonance Skill then Liberation, immediately use Outro into your main DPS, and go to town. The Outro buff will snapshot onto your main DPS, and Mortefi’s beams will rain down for the next 10 seconds.
Is Mortefi Still Worth Building in 2026?
Absolutely. Even with newer characters like Phrolova or Calcharo’s signature weapon shaking up the meta, Mortefi’s supportive consistency is unmatched for a 4-star. Plus, his sequences (duplicates) are relatively easy to obtain, and at sequence 4 he gains a massive 20% Fusion RES shred on his Liberation—truly broken for mono-Fusion teams.
So grab your Static Mist or Cadenza, farm those angry TD’s for Molten and Moonlit echoes, and let Mortefi do the heavy lifting from the backline. I guarantee you’ll feel the difference in your clear times.
If you have any wild echo combination you’ve tested, hit me up in the comments! Now if you’ll excuse me, I have a new Illusive Realm run to tackle with this exact setup. Good luck, Rovers!