Wuthering Waves - Mortefi Build Guide: Best Echo Sets and Skills

Best Mortefi build guide for Wuthering Waves (WuWa), including an overview of Mortefi, how to get, best Echo sets and Forte skill to get, best weapons, basic strategies and how to play, recommended Resonance Chain to unlock, required ascension materials per level, and stats per level cap in the game.

Best Mortefi Build Guide for Wuthering Waves (WuWa)

Character Overview

Tier	A
Attribute	Fusion
Weapon	Pistol
How to Get	Standard Convene Banners
Role	Sub DPS

Gameplay Summary

Mortefi is a character whose kit is ideally suited for the sub-DPS role but is capable of inflicting tremendous Fusion DMG on enemies. His Outro Skill, “Rage Transposition,” increases the switched character’s Heavy Attack DMG by an impressive 38% for 14s. Because of this, characters that rely heavily on their Heavy Attacks benefit from having Mortefi on their team, making Mortefi a great sub-DPS option for almost all team compositions.

In addition, activating Mortefi’s Resonance Liberation, Violent Finale, will apply “Burning Rhapsody” to all characters in the team. When Burning Rhapsody is active on the battlefield, Mortefi will be able to launch a Coordinated Attack whenever the active character’s Basic Attack and Heavy Attack hit a target.

Basic Strategy

Mortefi Basic Strategy
Fill up the gauge to enhance Mortefi’s Resonance Skill. Use the Resonance Liberation, then activate Outro Skill.

Fill up the “Annoyance” gauge to enhance Mortefi’s Resonance Skill.

Mortefi’s Resonance Skill, “Passionate Variation,” can be enhanced by filling the red bar above his HP bar. When it reaches 100, the Resonance Skill “Fury Fugue,” an enhanced version of Passionate Variation, becomes available.

“Annoyance” is gained by hitting targets with Basic Attacks and the “Passionate Variation” Resonance Skill. A more efficient way to gain “Annoyance” is by using this combo: Resonance Skill (Passionate Variation) → 4x Basic Attack → Resonance Skill (Fury Fugue).

Use the Resonance Liberation, then activate Outro Skill.

Activating Mortefi’s Resonance Liberation, “Violent Finale,” will allow him to provide support to other team members using his “Burning Rhapsody.” When “Burning Rhapsody” is active, Mortefi will be able to shoot “Marcato” once the switched character’s Basic Attack and Heavy Attack land on a target.

After casting the “Violent Finale” Resonance Liberation, switch to another character and trigger Mortefi’s Outro Skill. Doing so will not only allow Mortefi to shoot “Marcato” but also grant the switched character a Heavy Attack DMG boost, providing additional Fusion DMG and increasing the damage output of the switched character.

Best Echo Set for Mortefi

Mortefi Best Echo Set
Main Slot	Sub Slot 1	Sub Slot 2	Sub Slot 3	Sub Slot 4
Impermanence Heron (4)	Chaserazor (3)	Geohide Saurian (3)	Fission Junrock (1)	Diamondclaw (1)
Crit. Rate	Electro DMG Bonus	Electro DMG Bonus	ATK	ATK
Main Slot Echo Skill
Transform into Impermanence Heron to deal Havoc DMG. Long press to spit flames and continuously deal Havoc DMG. Once the attack hits any enemy, restore current character’s Resonance Energy. Increase next character’s damage dealt.
Main Slot Echo Sonata Effect
Moonlit Clouds (2/2) Energy Regen + Moonlit Clouds (5/5) Upon using Outro Skill, increase ATK of the next Resonator.

Focus on increasing Energy Regen to boost allies damage output.

Mortefi is capable of increasing his allies’ damage output because of his Outro Skill, and at the same time, he can provide Fusion DMG even while inactive by casting his Resonance Liberation. Therefore, it is ideal to equip him with “Moonlit Clouds,” as it gives Mortefi Energy Regen and increases the uptime of his Resonance Liberation. Note that Mortefi’s Resonance Liberation, “Violent Finale,” carries over to the switched character.

Best Weapons for Mortefi (Pistols)

5★ Cosmic Ripples

Weapon	Stats and Effects (Lv.1)
5★ Static Mist	ATK: 40 Crit. Rate: +5.4%
Rank 1 Stormy Resolution Increases Energy Regen by 12.8%. When Outro Skill is cast, increases the incoming Resonator’s ATK by 10%, stacking up to 1 time(s). This effect lasts for 14s
How to Get	Standard Weapon Convene

Weapon

Stats and Effects (Lv.1)

5★ Static Mist

ATK: 40
Crit. Rate: +5.4%

Rank 1 Stormy Resolution

Increases Energy Regen by 12.8%. When Outro Skill is cast, increases the incoming Resonator’s ATK by 10%, stacking up to 1 time(s). This effect lasts for 14s

How to Get

Standard Weapon Convene

4★ Pistol #26

Weapon	Stats and Effects (Lv.1)
4★ Pistol #26	ATK: 31 ATK: +8.1%
Rank 1 Omniscent When the Resonator takes no damage, increases ATK by 6% every 5s, stacking up to 2 time(s). This effect lasts for 8s. When Resonator takes damage, loses 1 stacks and heals them.
How to Get	Craft at Jinzhou

Weapon

Stats and Effects (Lv.1)

4★ Pistol #26

ATK: 31
ATK: +8.1%

Rank 1 Omniscent

When the Resonator takes no damage, increases ATK by 6% every 5s, stacking up to 2 time(s). This effect lasts for 8s. When Resonator takes damage, loses 1 stacks and heals them.

How to Get

Craft at Jinzhou

Equip a weapon that increases ATK or Crit. Rate.

For Mortefi, prioritize acquiring weapons that enhance ATK or Crit Rate. Although Mortefi mostly serves as a sub-DPS for team compositions, he can deal considerable damage when equipped with weapons that boost his damage-dealing capabilities. If you don’t have the 5-star pistol, consider crafting Pistol #26 as an alternative.

Best Mortefi Teams

Mortefi synergizes well with main DPS characters, who rely heavily on or accumulate stacks through their Heavy Attacks. For instance, Rover (Spectro) acquires “Diminutive Sound” stacks during the final phase of their Heavy Attack. Meanwhile, Jiyan’s Heavy Attacks inflict significant Aero DMG on enemies, which highly benefits from Mortefi’s Outro Skill (+38% Heavy Attack Bonus).

Additionally, Verina’s buffs complement Mortefi’s, boosting the main DPS character’s damage output even more. The team setups below not only provide the main DPS character with multiple attack power buffs but also elevate them to the role of hyper-carry.

Mortefi Team 1

Character	Ally 1	Ally 2
Rover (Spectro)	Verina (Spectro)	Mortefi (Fusion)
Rover (Spectro)	Rover (Spectro) is set as main DPS. Rover applies Spectro resistance reduction. Verina is set as support using healing and buffs. Mortefi is set as sub DPS to contribute to offense via Resonance Liberation skill follow up attacks (off-field).

Mortefi Team 2

Character	Ally 1	Ally 2
Mortefi (Fusion)	Jiyan (Aero)	Verina (Spectro)
Mortefi (Fusion)	Team that maximizes DPS via Mortefi’s buffs and off-field attacks. Jiyan is set as main DPS. Verina is set as support to provide healing + buffs.

Mortefi Resonance Chain Build

No.	Resonance Chain	Effect
1	Solitary Etude	During Resonance Liberation Burning Rhapsody, Mortefi launches Coordinated Attacks when the on-field character performs their Resonance Skills, firing 2 Resonance Liberation’s Marcato hits, dealing Fusion Damage.
1	Recommendation	★★★
2	Hypocritical Hymn	After using the Echo Skill, Mortefi restores an additional 10 Resonance Energy. This can be triggered once every 20 seconds.
2	Recommendation	★★
3	Flaming Recitativo	During Resonance Liberation Burning Rhapsody, the Crit. DMG of Resonance Liberation’s Marcato is increased by 30%.
3	Recommendation	★★
4	Cathartic Waltz	The duration of Resonance Liberation Burning Rhapsody is extended by 7s.
4	Recommendation	★★★
5	Funerary Quartet	When Resonance Skill Passionate Variation or Resonance Skill Fury Fugue hits a target, 4 Resonance Liberation’s Marcato hits will be fired, dealing Fusion Damage. DMG of Resonance Liberation’s Marcato fired in this way is reduced by 50%.
5	Recommendation	★
6	Apoplectic Instrumental	When Resonance Liberation Violent Finale is cast, ATK of all team members is increased by 20% for 20s.
6	Recommendation	★★

Mortefi Forte Skills Build Priority

Forte	Priority
Resonance Liberation	★★★★★ (Top)
Basic Attack	★★★ (Mid)
Forte Circuit	★★★★ (High)
Resonance Skill	★★ (Low)
Intro Skill	★★ (Low)

Basic Attacks

Basic Attack: Impromptu Show
Basic Attack Mortefi uses his dual pistols and flames to perform up to 4 consecutive shots, dealing Fusion DMG. Heavy Attack Mortefi enters the aiming state for a more powerful shot. The aimed shot fired after charging finishes deals Fusion DMG. Mid-Air Attack Mortefi consumes STA to perform consecutive shots at the target in mid-air, dealing Fusion DMG. Dodge Counter Use Basic Attack after a successful Dodge to attack the target, dealing Fusion DMG.
Attribute Bonuses
1: Fusion DMG Bonus +1.80% 2: Fusion DMG Bonus +4.20%

Basic Attack: Impromptu Show

Basic Attack

Mortefi uses his dual pistols and flames to perform up to 4 consecutive shots, dealing Fusion DMG.

Heavy Attack

Mortefi enters the aiming state for a more powerful shot. The aimed shot fired after charging finishes deals Fusion DMG.

Mid-Air Attack

Mortefi consumes STA to perform consecutive shots at the target in mid-air, dealing Fusion DMG.

Dodge Counter

Use Basic Attack after a successful Dodge to attack the target, dealing Fusion DMG.

Attribute Bonuses

1: Fusion DMG Bonus +1.80%
2: Fusion DMG Bonus +4.20%

Resonance Skill: Passionate Variation

Resonance Skill: Passionate Variation
Launch a flashing lightning of flames forward, dealing Fusion DMG.
Attribute Bonuses
1: ATK +1.80% 2: ATK +4.20%

Forte Circuit: Fury Fugue

Forte Circuit: Fury Fugue
“Resonance Skill: Fury Fugue” When Mortefi’s “Annoyance” reaches 100, his Resonance Skill is replaced with Fury Fudge. When casting Fury Fudge, Mortefi consumes all “Annoyance” to unleash high-speed flame lightning, dealing Fusion DMG, considered as Resonance Skill damage. “Annoyance” Mortefi can hold up to 100 Annoyance. When Normal attack Impromptu Show hits the target, “Annoyance” is restored. When Intro Skill Dissonance hits the target, “Annoyance” is restored. When Resonance Skill Passionate Variation hits the target, “Annoyance” is restored. Within 5s after casting Passionate Variation, Normal Attack Impromptu Show that hits the target additionally restores “Annoyance”.

“Resonance Skill: Fury Fugue”

When Mortefi’s “Annoyance” reaches 100, his Resonance Skill is replaced with Fury Fudge. When casting Fury Fudge, Mortefi consumes all “Annoyance” to unleash high-speed flame lightning, dealing Fusion DMG, considered as Resonance Skill damage.

“Annoyance”

Mortefi can hold up to 100 Annoyance.

When Normal attack Impromptu Show hits the target, “Annoyance” is restored.

When Intro Skill Dissonance hits the target, “Annoyance” is restored.

When Resonance Skill Passionate Variation hits the target, “Annoyance” is restored.

Within 5s after casting Passionate Variation, Normal Attack Impromptu Show that hits the target additionally restores “Annoyance”.

Resonance Liberation: Violent Finale

Resonance Liberation: Violent Finale
Deal Fusion DMG, and apply Burning Rhapsody to all characters on the team. “Burning Rhapsody” When the active character’s Basic Attack hits the target, Mortefi launches a Coordinated Attack, firing 1 Marcato. When the active character’s Heavy Attack hits the target, Mortefi launches a Coordinated Attack, firing 2 Marcato. Mortefi can launch one Coordinated Attack every 0.35s. “Marcato” Deals Fusion DMG.
Attribute Bonuses
1: ATK +1.80% 2: ATK +4.20%

Deal Fusion DMG, and apply Burning Rhapsody to all characters on the team.

“Burning Rhapsody”

When the active character’s Basic Attack hits the target, Mortefi launches a Coordinated Attack, firing 1 Marcato.

When the active character’s Heavy Attack hits the target, Mortefi launches a Coordinated Attack, firing 2 Marcato.

Mortefi can launch one Coordinated Attack every 0.35s.

“Marcato”

Deals Fusion DMG.