Mi Fu is a 6★ Guard (Physical element) introduced in Arknights: Endfield with the [Sketches of Lost Heirlooms] version on June 5, 2026 — one of two new 6★ operators in that update alongside Camille. She debuted as the rate-up operator of the [Fists of No Regrets] Chartered Headhunting banner (June 5 – June 26, 2026) and was the face of the version's [Scarlet Knot Issue] LTO weapon banner. In-game, she is the Watchguard Captain of the Wuling Scientific Developmental District under the Hongshan Academy of Sciences (HAS). This guide breaks down her base data from the EndfieldDex database, what her attributes mean for her build, the Claymore weapons that fit her, and where she currently stands in the headhunting rotation.
Base profile & stats
- Rarity / Class: 6★ Guard — Physical element
- Weapon type: Claymore
- Main attribute: Solidification Boost
- Sub attribute: Ultimate Gain Efficiency
- Faction: Hongshan Academy of Sciences (HAS)
- Department: Endfield Industries (exchange visitor)
- Race: Sarkaz
Her attribute split is the first thing to notice: Ultimate Gain Efficiency as a sub attribute points at a kit that wants its Ultimate up as often as possible, while Solidification Boost — one of the four elemental-reaction attributes in the game data (alongside Combustion, Electrification and Corrosion) — scales her damage around the Solidification mechanic. Together they reward a sustained frontline playstyle: stay in melee, keep the rotation rolling, and let the reaction damage compound. Her in-game tags (Constitution, Combat Technique) reinforce the same read — she is built to take and deal punishment up close.
Her base stat growth table on her character page covers five break stages from Base to Break 4; the leading column grows from 1,566 → 6,000 and the second from 91 → 343 across those stages. Her full per-stage values, voice actors (EN: Rao Zijun, CN: Zhang RuoYu, JP: Watanabe Akeno, KR: Min Ah) and lore records are all listed there. She is also one of only five operators affiliated with HAS in the current database — see the factions page for the full breakdown.
Who she is in the story
Her in-game records describe Mi Fu as the Watchguard Captain of the Wuling Scientific Developmental District under the Hongshan Academy of Sciences, currently on an exchange visit at Endfield Industries. She is a former Qingbo Stockade resident who rose through the watchguard ranks after Wuling City was completed, and her file notes that she has been studying every operator's combat prowess since arriving — repeatedly asking: "Interested in sparring with me?" Her home region is also the setting of the 1.4 [Homecoming] core chapter, whose main missions take Endministrators to the Wuling region (Chapter II), so her story ties directly into the current main-mission content.
How her attributes shape her build
As a Physical Guard with a Claymore, Mi Fu is a straightforward frontline damage dealer. The build-relevant question is how to feed her two attributes:
- Ultimate Gain Efficiency — the faster her Ultimate charges, the more value her sub attribute provides. In the game data this is attribute #42, and it appears across the equipment database's attribute rolls.
- Solidification Boost — her main attribute (attributes #65/#39 in the game data). It amplifies her damage around the Solidification reaction, so teams that can apply the status reliably will get more out of her than raw stat stacking alone.
For equipment, the equipment database currently lists 243 pieces across all slots — browse it by slot and rarity and look for pieces whose attribute modifiers roll Solidification Boost or Ultimate Gain Efficiency (both appear across the database's attribute rolls) to match her growth.
For team-building, her faction is worth a look: HAS members in the database are Lifeng (6★ Guard), Zhuang Fangyi (6★ Striker), Arcane (6★ Caster), Da Pan (5★ Striker) and Mi Fu herself. Two of those — Lifeng and Zhuang Fangyi — were in her debut banner's 6★ pool, and Arcane is one of the two 6★ operators introduced in 1.4 [Homecoming]. If faction-flavored teams are your thing, she slots into an HAS frontline alongside Lifeng with Zhuang Fangyi or Da Pan providing physical/electric burst support.
Recommended weapons: Claymores
Mi Fu's weapon type is Claymore. The EndfieldDex weapon database currently lists 72 weapons, including seven 6★ Claymores:
- Amaranthine Tassel
- Exemplar
- Former Finery
- Khravengger
- Phantom Pain
- Sundered Prince
- Thunderberge
Of these, Amaranthine Tassel has the strongest claim to being her companion weapon: it was the rate-up 6★ of the [Scarlet Knot Issue] LTO that ran alongside her debut banner, and its lore entry in the weapon database is told from the perspective of the Hongshan Swordmancers — the same Hongshan institution Mi Fu serves. It is a natural fit thematically, though as always you should confirm current skill effects in the in-game Acquisition Center before investing.
For players without a 6★ Claymore, the database lists four 5★ options — Ancient Canal, Finishing Call, OBJ Heavy Burden and Seeker of Dark Lung — plus her default equipment weapon, the 3★ Darhoff 7. Browse all of them on the weapons page, filter by Claymores, and match main/sub attributes to Solidification Boost and Ultimate Gain Efficiency where possible. Weapon skill descriptions in the database are still pending datamine; treat attribute matching as the primary decision factor for now.
Banner history & current availability
[Fists of No Regrets] Chartered Headhunting (her rate-up) ran from the [Sketches of Lost Heirlooms] release on June 5, 2026 to June 26, 2026 at 11:59 (server time), with a 6★ pool of Mi Fu / Zhuang Fangyi / Rossi / Ember / Lifeng / Ardelia / Last Rite / Pogranichnik. It was supported by the [One with Her Fists] sign-in event (up to [One with Her Fists HH Permit]×5), a discounted permit in the AIC Quota Exchange, and a Combat Drills trial stage where you could test her with a preset team. Like every Chartered banner, it carried the standard pull rewards: 30 attempts grant 10 bonus Urgent Recruitment attempts, 60 attempts grant a Headhunting Dossier, and every 240 attempts grant a Token of the rate-up operator.
The version she arrived with also added the Wuling – Sword Vault Dale area, three new enemies (Rockhowler, Armored Manglerbeast, Craghowler — all in the enemy database), three side missions (Deep Vaulted Steel, A Fistful of Reflections, Danse Macabre) and four new 6★ weapons: the Greatswords Amaranthine Tassel and Phantom Pain, plus the Polearms Blessing of Lustrous Carmine and Beacon of Duty.
Since then, Mi Fu stayed in the Chartered pool for exactly two more banners — [Expunger of Sin] (Camille, June 26 – July 16) and [North Yearns the Rift Vigile] (Arcane, July 16 – Aug 9) both still listed her — before the official rotation rule kicked in. Per the official announcements: "The Rate-UP 6★ operator featured in a [Chartered Headhunting] banner will be, after 3 [Chartered Headhunting] banners, removed from the list of operators that may appear in [Chartered Headhunting]," and this operator is also not added to Basic Headhunting. The current [Good Morning from Your Dawnstar] banner (Liino, live since Aug 9, 2026) reflects exactly that: its announced 6★ pool is Liino / Arcane / Camille / Ember / Lifeng / Ardelia / Last Rite / Pogranichnik — Mi Fu is not in it.
As of August 25, 2026, no official announcement has listed a Mi Fu rerun. The next version, [Dreamscape of Wind and Snow] (announced via official DEV Comm on Aug 22, 2026), covers AIC factory and quality-of-life improvements and mentions no operator reruns. Track what is live with the banner schedule, and keep your pity accounting honest with the headhunting tracker.
Frequently asked questions
Not from the current [Good Morning from Your Dawnstar] banner — its announced 6★ pool (Liino / Arcane / Camille / Ember / Lifeng / Ardelia / Last Rite / Pogranichnik) excludes her. Per the official rotation rule she left the Chartered pool after three banners and was not added to Basic Headhunting, so as of Aug 25, 2026 she is only obtainable through a future rerun or event — none of which have been announced.
As a 6★ Physical Guard with Ultimate Gain Efficiency and Solidification Boost, she is a solid frontline damage dealer whose value grows with reaction uptime and Ultimate cycling. See the rarity tier list for how she compares with the rest of the 6★ lineup.
Claymores — ideally a 6★ like Amaranthine Tassel (her debut banner's companion LTO weapon) or any of the other six 6★ Claymores in the database. Match weapon and equipment attributes to Solidification Boost and Ultimate Gain Efficiency. Use the headhunting guide and banner schedule to plan any future pulls.
No — she debuted on a standard Chartered Headhunting banner. The catch is that Chartered rate-up operators rotate out of the pool entirely after three banners and never enter Basic Headhunting, so "not limited" does not mean "always available."
Sources: official announcements — [Sketches of Lost Heirlooms] Version Update Notes (June 5, 2026), [Fists of No Regrets] Chartered Headhunting (June 3, 2026), [North Yearns the Rift Vigile] Chartered Headhunting (July 15, 2026), [Good Morning from Your Dawnstar] Chartered Headhunting (Aug 8, 2026) and [Dreamscape of Wind and Snow] DEV Comm (Aug 22, 2026) via the news archive; operator, weapon and equipment data from the EndfieldDex database (official game data).
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