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Image of Gunyolk from the Nintendo Switch version of Super Mario RPG
Gunyolk from Super Mario RPG (Nintendo Switch)
First appearance Super Mario RPG: Legend of the Seven Stars (1996)
Latest appearance Super Mario RPG (Nintendo Switch) (2023)

Gunyolk is a large mechanical monster created by the Factory Chief and appears in Super Mario RPG: Legend of the Seven Stars. Gunyolk and the Factory Chief are the last enemies that are encountered before Smithy. It resembles a heavily armored combination of a locomotive and a tank with a large vat of molten metal in the back.


Gunyolk uses the Breaker Beam every 2nd turn, which was previously used by the Blade; unlike it, however, Gunyolk does not need recharge after using it. On odd-numbered turns, Gunyolk chooses from a pair of attack pools. The first has a 33% chance of using Echofinder, which hits one character for 1.5x the damage of its normal attack and inflicts Mute, and uses a normal attack otherwise; the second pool has a 66% chance of using the Fire-attribute Fire Saber to inflict moderate magic damage, and a 33% chance of using the Thunder-attribute Electroshock, which can inflict even more magic damage.

Gunyolk has no resistance to status ailments. Gunyolk is additionally weak to Ice and Thunder.

A palette swap of Gunyolk exists that is unused in the game. It normally only attacks, but will use Lightning Orb every six turns.

Profiles and statistics[edit]

Super Mario RPG: Legend of the Seven Stars[edit]

Super Mario RPG: Legend of the Seven Stars enemy
Battle idle animation of the Gunyolk from Super Mario RPG: Legend of the Seven Stars HP 1500 FP 100 Speed 25
Location(s) Factory Attack 200 Magic attack 120
Role Boss Defense 130 Magic defense 80
Bonus Flower None Yoshi Cookie None Morph rate 0%
Evade 0% Magic evade 0% Spells Breaker Beam, Mega Drain, Electroshock
Weak Thunder, Ice Strong Fire, Critical Sp. attacks Echofinder
Coins 0 Exp. points 100 Items None
Psychopath "If we're defeated, the boss is alone!"

Super Mario RPG (Nintendo Switch)[edit]

Super Mario RPG enemy
Image of Gunyolk from the Nintendo Switch version of Super Mario RPG HP 1500 Weak Elements LightningIce Drops N/A
Exp. 100 Weak Statuses FearPoisonSleepMute Rare Drops N/A
Found in Factory
Monster List profile Smithy didn't even make this. A mere Factory Chief was the one who invented it. In that light, does it still qualify as a monster?
Thought Peek "If we're beaten, there'll be no one to watch the boss's back!"


Names in other languages[edit]

Language Name Meaning
Japanese ラスダーン
Comes from「ラスダン」(rasudan), which is from a clipping of the slang term for video games "last dungeon"

Chinese 拉斯丹
Transliteration of Japanese name

Dutch Megamagma X
Mega Magma X
French Thermutank
Blend of thermique ("thermal"), "mutant", and "tank"
German Pyropanzer
Pyro Tank
Italian Magmarmato
Portmanteau of "magma" and carro armato ("tank")
Korean 라스던
From the Japanese name

Spanish Mecamagma
Portmanteau of meca- (the prefix "mecha-") and "magma"