Best Mortefi Build Guide 2026

1. Character Overview

Mortefi is a 4-star Fusion Rectifier Support who provides team buffs and Fusion application. While his individual performance is modest, he can enhance Fusion DPS characters effectively.

Why Build Mortefi?

• Unique Fusion Seal mechanic: Sets Mortefi apart with a distinctive playstyle that rewards mastery.
• Strong Fusion damage: Consistent fusion-element damage output for Fusion teams.
• Versatile team builder: Fits into multiple team compositions as support.
• Scales well with investment: Performance improves significantly with proper build and Resonance Chains.

Role in Team

Primary support in Fusion-focused teams. Mortefi excels when paired with characters who can support her fusion seal mechanic and amplify her fusion damage output. Her kit synergizes well with both quick-swap and sustained combat rotations.

2. Best Build

Weapons

Echoes (Sonata Effects)

Molten Rift (5pc)

2-piece: Fusion DMG +10%

5-piece: When hitting a target with Fusion Frazzle, increase Crit Rate by 10% and grant 30% Fusion DMG Bonus, lasting for 10s.

Main Echo: Molten (or Alternative Echo) — provides Fusion DMG Bonus and ATK% buffs.

Substats Priority

Target Stats

• HP: 25,000+
• Energy Regen: 130%+
• Healing Bonus: 40%+
• ATK: 1,500+
• Fusion DMG Bonus: 20% - 30%

3. Skill Analysis

Skill Level Priority

Resonance Skill > Forte Circuit > Resonance Liberation > Intro Skill > Normal Attack

4. Team Compositions

Mortefi excels in teams that can support her fusion seal mechanic and amplify her fusion damage. She works best with characters who provide healing, buffs, or complementary elemental reactions.

Rotation Tips

1. Start with support/healer: Cast Resonance Skill to apply buffs, build Concerto Energy.
2. Swap to sub-DPS: Apply elemental reactions and generate Concerto.
3. Swap to Mortefi (Intro): Apply Fusion Frazzle and gain initial buffs.
4. Build resources: Use Normal Attacks and Skills to build energy/buffs.
5. Cast Liberation: Unleash burst damage at optimal timing.
6. Maintain DPS: Continue attacking during buff windows.
7. Swap out: Trigger Outro skill, switch to support to restart cycle.

Tip: Always time your Liberation with full buffs for maximum damage output. Maintain Fusion Frazzle on enemies for consistent damage.

5. Resonance Chain (Sequence Nodes)

Worth Pulling?

S1 and S2 provide the biggest power spikes. S6 is powerful but luxury. S0 Mortefi is already a solid character. S2 is the sweet spot for most players. S3 and S5 provide massive damage spikes. S6 is whale territory but transforms Mortefi into the highest tier character.

6. Upgrade Materials

Materials needed to ascend Mortefi to 6✦ and level all main skills to 10:

Ascension Materials (0✦ → 6✦)

Skill Materials (All Main Skills to 10)

Total Shell Credits Needed

~800,000 Shell Credits total for full ascension + all skills. Start saving early!

7. Frequently Asked Questions

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