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Furnace Shell Mountain Weasel

Last updated 2026-02-12

Furnace Shell Mountain Weasels are Elite Enemies that are part of the Mystical Beasts family.

Drops

Items

Energy

Energy Drops
TypeHP ThresholdDrop(s)
Pyro66%Particle ×2
33%Particle ×2
0%Particle ×2

Stats

RES
Physical Pyro Hydro Electro Cryo Dendro Anemo Geo
10% 50% 10% 10% 10% 10% 10% 10%

Toggle Levels

Level Scaling
LevelHPATKDEF
1808167505
103,181447550
209,3621,104600
3017,4351,803650
4031,3042,696700
5057,6793,792750
6097,4485,064800
70161,1736,734850
80260,0039,783900
90408,10312,561950
100610,06016,2511,000
104685,99617,5491,020

Note that HP and ATK values may change in Co-Op Mode, some Quests, and certain Domains (including Spiral Abyss and Imaginarium Theater). For more details, see Enemy/Level Scaling § Other Multipliers.

Abilities

Melee Combo
Attacks with its claw followed by its tail, dealing 45% ATK, 60% ATK as Pyro DMG. May combo into a Tail Smash.
Tail Smash
Performs a front flip and smashes the ground with its tail, dealing 75% ATK as Pyro DMG.
Rolling Charge
If the player is far away, rolls towards the player, repeatedly dealing 10% ATK as Pyro DMG on hit. After rolling, performs a leaping tail slam, dealing 100% ATK as Pyro DMG.
  • If the Weasel comes into contact with a charging Tatankasaurus in its Spirited state or a character from the Collective of Plenty in a similar state (Iansan's Rushing Thunderbolt mode, or Varesa's Sudden Onrush mode), then the charge will be interrupted and the Weasel will be stunned for a short while.
Scorch Ray
Fires a fiery beam at the player using its Secret Source core, dealing 100% ATK as Pyro DMG.
Activate Core
Burrows underground and activates its Secret Source Core, gaining an elementless ward equal to 100% of its Max HP. While the core is active, periodically releases a shockwave, dealing 80% ATK as Pyro DMG, up to a total of 4 times. Hitting the core with a Plunging Attack will cause the ward's durability to reduce by an extra 25% and briefly interrupt it. The ward can record damage taken. When ward is broken, loses HP equal to 15% non-Plunge DMG + 160% Plunge DMG taken by ward, not exceeding 50% Max HP.

Achievements

There is 1 Achievement obtainable from Furnace Shell Mountain Weasel:

Achievement Category Description Primogem

Emergency Brakes, Teteocan Style Wonders of the World Wonders of the World Use a Tatankasaurus or a Collective of Plenty character's sprint to interrupt the Furnace Shell Mountain Weasel's charge. 5

Tutorial

Furnace Shell Mountain Weasel
Tutorial Furnace Shell Mountain Weasel
A unique ancient species of mountain beast that has long lived in the Sacred Mountain Ruins and has formed an interdependent relationship with the Source Mechanism. During battle, the Furnace Shell Mountain Weasel will burrow underground and activate its "Secret Source Core" to periodically attack surrounding enemies. At this time, dealing enough damage to the "Secret Source Core" will force it to emerge from underground. However, since it is hiding underground, using a Plunging Attack might prove more effective...

Descriptions

An ancient variant of mountain weasel that has adapted to a unique, Phlogiston-rich environment isolated from the outside world. Some researchers from the Saurian Relics Association believe that despite the appearance that it has developed a symbiotic relationship with the Source Mechanisms, said mechanisms are actually controlling it through the ample Phlogiston that permeates its body.

An ancient variant of mountain weasel that has adapted to a unique, Phlogiston-rich environment isolated from the outside world.
By consuming creatures rich in Phlogiston, this species accumulates power in the shell it holds. After a prolonged existence in the ruins of the Sacred Mountain, its affinity for Phlogiston seems to have caused it to be influenced by the Source Mechanisms within the ruins, creating a unique symbiotic relationship between them.

Gallery

Other Languages

LanguageOfficial NameLiteral Meaning
EnglishFurnace Shell Mountain Weasel
Chinese
(Simplified)
炉壳山鼬
Furnace Shell Mountain Weasel
Chinese
(Traditional)
爐殼山鼬
Japaneseマグマイタチ
Magumaitachi
Magma Weasel
Korean용암 껍질 산족제비
Yong'am Kkeopjil Sanjokjebi
SpanishHurón FraguacorazadoArmored Forge Ferret
FrenchBelette des montagnes à coquille fournaiseFurnace Shell Mountain Weasel
RussianТермопанцирный горный хорь
Termopantsirnyy gornyy khor'
ThaiFurnace Shell Mountain Weasel
VietnameseChồn Núi Giáp Lửa
GermanBrennkammer-BergmarderCombustion Chamber Mountain Marten
IndonesianFurnace Shell Mountain Weasel
PortugueseFurão da Montanha Concha de Fornalha
TurkishKor Çekirdekli Dağ Gelinciği
ItalianDonnola di montagna FornardenteFurnace-hot Mountain Weasel[• 1]
  1. Italian: Fornardente is a portmanteau of fornace "furnace" and ardente "blazing".

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