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Mongil: Star Dive Duoxini Boss Guide — Best Team, Strategy & Drops

Late-progression Fire dungeon boss — weak to Earth. HP ~795k with ATK over 1000 — survival becomes as important as DPS. Gabi-led Earth core (Gabi + Ellie + Francis / Daisy) is the launch comp; the Earth Affliction stacking on Frenzied White Wolf 4pc is the team enabler.

Duoxini Boss Guide — Best Team, Strategy & Drops

Duoxini
Mongil: Star Dive · Boss Guide

Duoxini Boss

Fire dungeon boss · Recommended Level 50 · 1.0 launch

Late-progression Fire dungeon boss — weak to Earth. HP ~795k with ATK over 1000 — survival becomes as important as DPS. Gabi-led Earth core (Gabi + Ellie + Francis / Daisy) is the launch comp; the Earth Affliction stacking on Frenzied White Wolf 4pc is the team enabler.

  • Boss
  • Fire
  • Weak: Earth
  • Lvl 50
  • HP 795k
  • Late-progression
How to clear it

Recommended approach

Duoxini is the level 50 Fire dungeon boss — weak to Earth. HP sits at ~795,100 (11× Custos) and boss ATK jumps to 1,082 — the first encounter where one-shot threats are real for low-survival comps. Stagger gauge is ~27,300 with groggy DEF 700. Gear scaling matters more than at any earlier dungeon: Equipment ~Lv48+ is the realistic clear threshold.

Earth element is the answer — Gabi (SSR Earth Brawler) leads with Spiritual Power + Petrification, Ellie (SR Earth Destroyer) chips bench DPS via Sleepy... + Pillow Pow!, and Francis or Daisy covers heal + Earth Affliction. The Frenzied White Wolf 4pc set (SR Earth) +2% Elemental Weakness DMG taken on Earth-Afflicted enemies is the team multiplier — keep Affliction uptime high throughout the fight.

Pull-priority for this fight: Gabi defines the entire Earth progression curve. Without her, the F2P Earth-SR comp (Ellie + Francis + Daisy) clears but slowly — Duoxini's 795k HP at level 50 expects a real damage line. Daisy's C4 (Always Together) +10% All Elemental RES team passive softens Duoxini's high ATK output, making her a strong second supporter slot.

  • Story / first clearBLate-progression DPS check + survival check. Equipment ~Lv48+ required for clean clear.
  • Conquest ticketsSRepeatable for Earth-themed crafting materials. Highest-HP launch dungeon = best material drop rate per ticket.
  • SpeedrunC795k HP + 27k stagger means sub-3-minute clears require Gabi C2+ or Ellie C2+ with Frenzied White Wolf 4pc.
  • F2P difficultyCHard F2P without Gabi. SR-only Earth comp (Ellie + Francis + Daisy) clears at recommended level but expects 5-6 stagger cycles.
  • Reroll filterAIf Duoxini walls you long-term, reroll for Gabi — she anchors every Earth Conquest tier above this.

Stagger windows

  • Single weakness (Earth) — clean elemental matchup, no element-locked phase shifts.
  • 10 HP phases — multiple stagger windows over a long fight, recovery-friendly.
  • Groggy DEF 700 — burst window converts cleanly during stagger; Gabi Petrification + Ellie Pillow Pow! both pay off.
  • BIND stagger animation — predictable burst windows, dodge play does not interrupt damage.
  • Earth Affliction from Gabi / Francis / Daisy / Ellie compounds via Frenzied White Wolf 4pc — entire team's damage scales together.
  • Duoxini is Fire element → Fire attacks do nothing for you (no Fire team works here), but conversely your Earth team takes reduced Fire damage from Duoxini's attacks.

Boss threats

  • Boss ATK 1,082 — first one-shot threat in the launch progression. Survival comp + healer mandatory.
  • 795k HP — 11× Custos. The first real attrition fight, ~4-5 minute clears with a geared Earth team.
  • Stagger gauge ~27,300 + groggy DEF 700 — single-Special stagger breaks unrealistic, plan for 5-6 cycles per phase.
  • Without Gabi, the Earth roster is SR-only (Ellie / Francis / Daisy) — clears but feels grindy.
  • Earth-only elemental answer — Fire / Wind / Ice / Lightning carries deal neutral damage with no efficient amp.
  • Higher gear demand than earlier dungeons — Equipment ~Lv48+ realistic clear threshold, expect multiple Conquest tier attempts.
How to clear it

Recommended team

Best counter carry, best team comp, and farmable alternates to clear Duoxini.

BIS counter carryBISGabi (Earth Brawler)SSR Earth Brawler. Spiritual Power + Petrification loop. To Whom the Dokkaebi Kneel signature artifact compounds her Petrification burst windows. The cleanest single-character clear of Duoxini at C0 once Equipment ~Lv48+ + West Wind 4pc reached.
Best team compBISGabi + Ellie + FrancisLaunch Earth core. Gabi leads stagger + Petrification, Ellie chips bench DPS via Sleepy... + Pillow Pow!, Francis covers reactive heal + Earth Affliction for Frenzied White Wolf 4pc payoff. The default launch comp for Duoxini — works at every Conquest tier with proper gear scaling.

Alt team comps

  • Gabi + Ellie + Daisy (HoT + RES focus) — Replace Francis with Daisy for sustained Flower Field HoT + Mr. Flower's Aid +Earth RES passive (C4 → +All Elemental RES). Stronger for sustained-damage phases over reactive heal.
  • Ellie + Francis + Daisy (F2P SR-only) — Pure-SR Earth team. Ellie ranged Snacks + Pillow Pow! lead, Francis + Daisy double heal + Earth Affliction. Slow clear but fully F2P-clearable at recommended level. Expect ~5-6 minute fights.
  • Gabi + Daisy + Bonnie (cross-element) — Earth lead + Earth healer + Wind support. Bonnie's Encore (C2) team Crit DMG amps Gabi's Petrification burst. Sacrifices Ellie's bench DPS for Bonnie's universal Crit DMG buff.
Fight mechanics

Duoxini at a glance

Late-progression DPS + survival check.

Combat stats (in-game, level 50)

  • Element — Fire — your team's Fire attacks (none should be running here) are neutralised.
  • Weakness — Earth — Gabi / Ellie / Francis / Daisy are the elemental answer.
  • HP — ~795,100 — 11× Custos. First major attrition fight.
  • ATK / DEF — 1,082 ATK / 1,171 DEF — first one-shot threat in the launch progression. Survival comp mandatory.
  • Stagger gauge — ~27,300 / Groggy DEF 700 — plan for 5-6 stagger cycles per phase.
  • Recommended level — 50 — Equipment ~Lv48+ realistic clear threshold.
  • HP phases — 10 — paced for ~4-5 minute clears.
  • Stagger animation — BIND — predictable burst windows.
Boss rotation

Suggested clear rotation

Earth core rotation — Gabi leads, Ellie chips, Francis / Daisy anchors survival.

  • 1. Tag-In with Francis or Daisy for heal + Earth Affliction — Open with the Supporter Tag-In — applies Earth Affliction (Francis Drug Field or Daisy Flower Field) for Frenzied White Wolf 4pc payoff. Establishes heal field.
  • 2. Swap to Gabi for Spiritual Power + Petrification lead — Gabi's BA + Special chains generate Spiritual Power; Petrification stagger burst is the fight's main damage instance. Lead carry — Gabi holds the field most of the fight.
  • 3. Swap to Ellie for bench DPS + Snack heals — Ellie's Snacks heal teammates as they collect + her Sleepy... bench damage continues while Gabi or Francis holds the field. Drop Pillow Pow! at 3 Sugar Charge stacks for burst.
  • 4. Trigger stagger → dump Gabi Petrification + Ellie Pillow Pow! — Stagger breaks after 5-6 Special cycles. During BIND window, dump Gabi's biggest Petrification combo + Ellie's Pillow Pow! Highest single-instance damage of the fight.
  • 5. Repeat — Duoxini has 10 HP phases — 795k HP / 10 phases = ~79k per phase. Each phase opens fresh stagger gauge after 10s recovery. Pace the fight around 5-6 stagger cycles per phase + Francis Support auto-heal anchors survival. Equipment ~Lv48+ keeps the rhythm sustainable.
Loot

What Duoxini drops

Earth-themed crafting materials. The primary Conquest farm for the Earth core's gear path.

Drop table

Duoxini drops Earth-themed crafting materials used in the West Wind SSR set + Frenzied White Wolf SR set + Earth weapon upgrades. The exact drop list rotates with Conquest difficulty and is shown in-game on the dungeon entry screen.

Repeatability

Duoxini is repeatable via Conquest tickets. Each clear consumes 1 ticket. Higher Conquest tiers drop higher-tier Earth crafting materials. Prioritise farming Duoxini to gear up Gabi / Ellie / Francis / Daisy — the entire launch Earth roster benefits.

Counter picks

Characters that counter Duoxini

Earth carries lead. Gabi is the launch ceiling.

  1. 1GabiGabiLaunch SSR Earth Brawler. Spiritual Power + Petrification burst. The cleanest single-carry clear of Duoxini once Equipment ~Lv48+.Earth · Brawler (SSR)
  2. 2EllieEllieSR Earth Destroyer. Snacks + Sleepy... bench DPS + Pillow Pow! burst. F2P second damage line + passive team sustain via Snack heals.Earth · Destroyer (SR)
  3. 3FrancisFrancisUniversal launch healer + Earth Affliction. ATK-scaling Drug Field heal anchors Duoxini's high ATK threat. Free at launch.Earth · Supporter (SR)
  4. 4DaisyDaisyAlternative Earth healer. Flower Field HoT + Mr. Flower's Aid +Earth RES passive (C4 → +All Elemental RES). Pick Daisy for sustained-damage fights, Francis for damage-spike fights.Earth · Supporter (SR)

Gabi + Ellie + Francis is the launch default. Swap Francis for Daisy if you need RES leaning, or run Bonnie for cross-element Crit DMG support.

Stop reading, start clearing

Plan the clear on ZeroLuck

Use these free tools to plan your team, browse community clears, and benchmark your stagger DPS.

Boss pageDuoxini boss pageFull data — stats, stagger numbers, drop table, dungeon entry.CommunityDuoxini clear teamsLive community teams running Earth core for Duoxini.MetaMongil tier listSee where the recommended Earth carries rank in the launch meta.
Quick answers

FAQ

What is the recommended level for Duoxini?
Recommended level 50. Equipment level ~Lv48+ is the realistic clear threshold. Below that, the 795k HP + boss ATK 1,082 make the fight feel attritional and dangerous.
What element should I use against Duoxini?
Earth. Duoxini is Fire element and weak to Earth — every Earth attack deals bonus damage. Fire attacks are wasted (Duoxini IS Fire); Wind / Lightning / Ice deal neutral damage. Build the team around Gabi / Ellie / Francis / Daisy.
Can I clear Duoxini F2P?
Yes, but slowly. Ellie + Francis + Daisy (pure-SR Earth team) clears at recommended level but expects ~5-6 minute fights. Faster F2P clears require pulling Gabi via standard banner. The fight is the first F2P-difficulty wall in the launch progression.
How much HP does Duoxini have?
~795,100 HP at level 50. 11× Custos at the same launch-progression pace — the first major attrition fight. Fight typically ends in ~3-4 minutes with Gabi + Ellie + Francis, ~5-6 minutes with SR-only.
How do I survive Duoxini's high ATK?
Boss ATK 1,082 — first one-shot threat in launch. Bring Francis (reactive Drug Field heal) and/or Daisy (sustained Flower Field HoT). Daisy's C4 (Always Together) +10% All Elemental RES team passive is the survival ceiling. Avoid glass-cannon Brawlers without sustain.
Which character is best against Duoxini?
Gabi (SSR Earth Brawler) is the cleanest single-carry clear. Ellie (SR Earth Destroyer) anchors F2P bench DPS. Francis or Daisy covers survival. Gabi + Ellie + Francis is the launch SSR/SR Earth backbone.
Should I use Frenzied White Wolf or West Wind on Duoxini?
Both work. West Wind 4pc (SSR Earth) is the ceiling for Gabi. Frenzied White Wolf 4pc (SR Earth, craftable) is the F2P alternative + better for supporter slots (Francis, Daisy, Ellie) because of the team DEF + Elemental Weakness DMG taken buffs. Stack both across the team.
What does Duoxini drop?
Earth-themed crafting materials used in the West Wind SSR set + Frenzied White Wolf SR set + Earth weapon upgrades. Drops scale with Conquest difficulty tier — repeatable via Conquest tickets. Prioritise farming Duoxini to gear up your entire launch Earth roster.
Does Duoxini have phases?
10 HP phases. Each phase opens a fresh stagger gauge that resets after recovery (10s if not broken). 795k HP / 10 phases = ~79k per phase — pace the fight around 5-6 stagger cycles per phase + maintain Earth Affliction uptime for Frenzied White Wolf 4pc compound damage.
Can I use my Fire core (Mina + Flare + Leeho) on Duoxini?
No. Duoxini IS Fire element — Fire attacks are wasted (Fire-resist). Worse, Duoxini's Fire damage output one-shots glass-cannon Fire Brawlers without healer sustain. Build or pull Earth before attempting Duoxini.

Sources & method

All stats and gauge numbers trace back to game data exports in games/mongil/data/boss-details/. Strategy notes are our editorial reading written in our own words.

  • In-game boss data — stats (HP, ATK, DEF), stagger gauge, groggy DEF, weakness matrix.
  • Dungeon entry data — recommended level 50, dungeonKey 20401, single-stage encounter.
  • Community team composition guide — Mongil: Star Dive Earth launch comps.
  • Community clear runs — Gabi + Ellie + Francis comp validation at recommended level.
Live community tools

Teams clearing Duoxini

Browse the community teams that have cleared Duoxini, preview them, or share your own team after a clear.

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