Introduction — Firtho
Firtho is a 4-Star Radiatio character with the Guardian Identity and a Survival & Healing combat style in Silver Palace.
This Firtho profile covers the kit, stats, Potential Break materials, Psyche upgrades, background, and more. Use the tabs above to visit the dedicated build guide or team composition guide.
A reliable examiner, a doctor, and a close friend. She lives alongside death day after day, performing dissections and autopsies, bearing witness to the final testimonies of the deceased. Cares not for pity, debts of gratitude, nor farewells. Life is but a fleeting tide upon the river of the departed.
Firtho's Stats
Core stats
- HP
- ATK
- DEF
Combat attributes
- CRIT Rate
- 5%
- CRIT DMG
- 50%
- Amplitude Coefficient
- 5%
- Amplitude Multiplier
- 50%
- Stun Buildup Bonus
- 30%
- Ultimate Charge Efficiency
- 100%
- Break Exploit
- 100
Firtho's Potential Break Materials
The table below lists the materials needed for all six of Firtho's Potential Breaks, excluding character EXP materials and level-up currency.
| Material type | Total required |
|---|---|
| Insight Materials |
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| Materials |
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| Currency |
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Firtho's Method Materials
The table below breaks down the materials required to upgrade Firtho's skills, unlock their passive skill, and complete all Method stat nodes.
Use the individual tabs to filter the materials or see the overall total required to level everything for Firtho.
| Material type | Total required |
|---|---|
| Insight Materials |
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| Currency |
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| Material type | Total required |
|---|---|
| Insight Materials |
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| Currency |
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| Material type | Total required |
|---|---|
| Insight Materials |
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| Currency |
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Firtho's Skills & Methods
Basic Attack
Press the Basic Attack button to perform a combo of up to 4 hits, dealing Radiatio DMG.
Upon triggering a Perfect Dodge, press the Basic Attack button to immediately unleash a Lv. 2 Charged Attack, dealing DMG and interrupting enemies.
Charged Attack
Lv. 1: Hold the Basic Attack button to unleash an attack dealing Radiatio DMG.
Lv. 2: Hold the Basic Attack button to unleash a powerful attack dealing Radiatio DMG.
Pursuit Attack
After Dodging or during a Dash, press the Basic Attack button to unleash a Pursuit Attack, dealing Radiatio DMG.
A surgical consent must be signed before an operation, but this does not apply to self-defence.
Skill Multipliers
Skill
Press the Skill button to consume 2.5 Special Serum, dealing Radiatio DMG.
Hold the Skill button to consume 10 Special Serum, draining HP every 0.2s; releasing the Skill button deals Radiatio DMG and increases the ATK of all characters on the team by 1.5%. Stacks up to 8 times and lasts 40s. During this, all characters on the team are healed over time, and all but Firtho also receive an instant heal.
Parrying while holding the Skill button and draining HP immediately triggers a fully-charged Skill, consuming all Special Serum.
Max Special Serum: 10.
Special Serum gained per second: 1.
"Life isn't simply a gift."
Skill Multipliers
Ultimate
Upon reaching full charge, press the Ultimate button to swing the amputation saw in a powerful blow, dealing Radiatio DMG.
The mask suppresses contamination and the expression of emotion. Such is the mercy of Death.
Skill Multipliers
Tactical Assault
Switch in the selected character while having sufficient Reactor Energy to deal Radiatio DMG.
"When two objects make contact, there is bound to be a transfer of energy between them."
Skill Multipliers
Passive
Reduces team's DMG taken by 20% during Second Heart's buff.
Rely properly on pharmaceuticals and others.
Firtho's Psyche
Firtho's Charged Skill provides 10% more healing.
After she uses a Charged Skill, all characters on the team take 10% less DMG for the duration of the buff.
The buff from Firtho's Charged Skill also increases the Amplitude Coefficient of all characters on the team by 16%.
After Firtho unleashes a Charged Skill, her Basic Attack DMG is increased by 24% for 6s.
After Firtho uses her Tactical Assault, she recovers 20% Silverdrips. For each buff stack her Charged Skill grants, she recovers 2% Silverdrips.
After Firtho uses her Ultimate, she increases the Radiatio DMG of all characters on the team by 15% for 40s.
Firtho's Charged Skill DMG is increased by 15%.
For each enemy her Charged Skill hits, the DMG of her next Ultimate is increased by 9%, up to a maximum of 27%.
Firtho Voice Actors
Firtho Guide & Best Builds
For recommendations on Firtho's best Motives, Epiphanies, Implements, Catalysts, stat priorities, and playstyle, visit our dedicated build guide:
Changelog
- 16 Oct. 2026: Initial Firtho guide template added.
