Since the launch of Wuthering Waves, players have been constantly searching for the most effective Resonators to clear challenging content, and one name that consistently appears in high-level discussions is Wuthering Waves mortefi. This 4-star Fusion pistol user has carved out a powerful niche for himself, not just as a competent damage dealer, but as an indispensable support for some of the game's strongest teams. If you've been wondering how to unlock his true potential, especially with the meta shifting in 2025, you've come to the right place. This guide will break down everything you need to know.

Who is Mortefi? The Dragon of Wrath

Mortefi is a Hybrid Sub-DPS whose true strength lies in his off-field capabilities. His kit is designed around providing a massive buff to Heavy Attack DMG through his Outro Skill and supplementing the team's damage with coordinated attacks from his Resonance Liberation, "Violent Finale." When his ultimate is active, every Basic Attack from the on-field character triggers a fiery follow-up from Mortefi; even better, a Heavy Attack triggers two!

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This makes him an incredible partner for characters who rely on spamming Heavy Attacks. While he can contribute solid personal damage, his primary role is to enable his Main DPS to reach new heights. He's easy to play, has one of the fastest Concerto rotations in the game, and brings a unique blend of buffs and damage that few others can match. 🤔

Mortefi Best Build for Maximum Impact

Creating the mortefi best build involves a careful balance of personal damage and supportive utility. As of early 2025, after updates like Patch 2.3, his build paths have been refined to perfection.

  • Static Mist (5-Star): Unquestionably his best weapon. It provides a high base ATK, CRIT Rate, and a passive that further boosts Energy Regen and ATK, synergizing perfectly with his kit.

  • 4-Star Alternatives: If you don't have his signature weapon, look for pistols that provide Energy Regen or ATK%. Weapons like Cadenza or Relativistic Jet are excellent choices to ensure you can use his all-important Resonance Liberation as often as possible.

Echo Sets: Two Powerful Choices

Choosing the right Echo set is crucial. Mortefi has two primary options depending on your investment level and team goals:

  1. 5-Piece Moonlit Clouds: This is the standard, foolproof support set. It provides Energy Regen and, upon using an Outro Skill, gives the next character a massive 22.5% ATK buff for 15 seconds. This stacks with his own Heavy Attack DMG buff, making for a monumental damage increase for your Main DPS.

  2. 5-Piece Empyrean Anthem: This is the high-investment, high-reward option. This set boosts Mortefi's Coordinated Attack DMG by a staggering 80%. When his coordinated attacks critically hit, it grants the active Resonator a 20% ATK buff. To make this set work effectively, you need a 5-star weapon and endgame Echo stats with very high CRIT Rate (around 65-70%). When you meet these conditions, this set surpasses Moonlit Clouds for total team damage.

Stat and Substat Priority

Regardless of the set you choose, your stat goals remain similar. Here’s what you should aim for:

  • Main Echo: Impermanence Heron (for Moonlit Clouds) or Hecate (for Empyrean Anthem).

  • Main Stats:

    • 4-Cost Echo: CRIT Rate or CRIT DMG

    • 3-Cost Echoes: Fusion DMG% (or Energy Regen% if you're struggling to meet his needs)

    • 1-Cost Echoes: ATK%

  • Substat Priority: Energy Regen% (until you can comfortably use his Liberation each rotation) >= CRIT Rate% = CRIT DMG% > ATK% > Flat ATK.

Gameplay: Rotation and Skill Priority

To maximize Mortefi's impact, you need to use his skills in the right order to generate energy and apply buffs efficiently.

Skill Level-Up Priority:

  1. Resonance Liberation (Violent Finale): This is his most important skill. Level it first.

  2. Forte Circuit (Fury Fugue): Your main source of personal on-field damage.

  3. Basic Attack (Impromptu Show): Used to generate his "Annoyance" resource.

  4. Resonance Skill (Passionate Variation): Important for energy and Annoyance generation.

Optimal Rotation:

An ideal rotation takes only a few seconds and ensures your Main DPS enters the field with every possible buff.

  1. Switch to Mortefi (use Intro Skill if available).

  2. Use his Resonance Skill ("Passionate Variation").

  3. Perform a full Basic Attack combo to quickly fill his "Annoyance" gauge.

  4. Use his enhanced Resonance Skill ("Fury Fugue").

  5. Cast his Resonance Liberation ("Violent Finale").

  6. Cast his Echo Skill.

  7. Immediately switch to your Main DPS to trigger Mortefi's Outro Skill.

This sequence ensures his coordinated attacks are active and your Main DPS receives both his Outro buff and the Echo set bonus. 🚀

Team Synergies and the Iuno vs Mortefi Question

Mortefi truly shines when paired with the right teammates. His best partner is, without a doubt, Jiyan, whose entire damage profile during his ultimate is considered Heavy Attacks, allowing him to take full advantage of Mortefi's kit. Other strong partners include Augusta and Jinhsi.

With the release of Iuno in Version 2.6, a common question has emerged: iuno vs mortefi? It's a valid query, but they fill different roles. Iuno is a formidable Resonator, but she does not offer the specialized Heavy Attack buffing and off-field coordinated damage that Mortefi provides. The choice isn't about which one is stronger in a vacuum; it's about team composition. If your team is built around a Heavy Attack Main DPS like Jiyan, Mortefi is irreplaceable. If your team has different needs, Iuno might be a better fit. They aren't direct competitors but rather specialists for different strategies.

Final Verdict: Is Mortefi Worth It?

Absolutely. In 2025, Wuthering Waves Mortefi remains one of the most valuable 4-star characters in the game. His ability to dramatically amplify the damage of top-tier characters makes him a core component of many endgame teams. While he does have a long ultimate cooldown and a need for Energy Regen at lower Sequences, the investment is more than worth it. If you want to see big numbers and enable your favorite Heavy Attackers to demolish everything in their path, building Mortefi is not just a suggestion—it's a necessity. ✨