Smithy is the diabolical leader of the Smithy Gang, an organization that attempted to take over the world during the events of Super Mario RPG: Legend of the Seven Stars. To do this, Smithy tried to eliminate the power of wishes from the world and, additionally, fill the world with his weapons. He is a gray mechanical monstrosity that wears a gold crown and has a long, white beard. He hails from another dimension, a dimension that is accessible by the gateway Exor. In his dimension, he resides in Smithy Factory, where, day and night, Smithy creates mechanical monsters to be unleashed against the peaceful peoples of other dimensions.
At the start of his invasion of the Mushroom World, Smithy ordered the sword Exor to occupy Bowser's Keep. Once there, Smithy established his base of operations in Bowser’s Keep (however, Smithy’s Factory was still the main headquarters of the Smithy Gang). During the battle that ensued, Bowser’s forces were either eliminated or had defected to the Smithy Gang. With the Koopa Troop out of the picture, Smithy set his sights on the rest of the world.
Additionally, during the initial invasion, Exor was ordered to shatter the Star Road, the source of wishes in the world. Without the power of wishes in play, Smithy would have an easier time conquering the planet.
Once Bowser’s Keep was occupied, Smithy sent out his various lieutenants to terrorize the people of the world and to recover the Star Pieces needed to restore the power of wishes to the world. Smithy did not want anyone returning the Star Pieces to Star Road. His lieutenants did as follows:
- The knife monster Mack conquered the Mushroom Kingdom and acquired the first Star Piece.
- The bow creature Bowyer attacked the people of Rose Town with poisoned arrows and recovered the second Star Piece.
- The spear monster Yaridovich occupied Seaside Town and recovered the fifth Star Piece.
- Lastly, the Axem Rangers claimed the sixth Star Piece from Barrel Volcano.
However, all of Smithy’s operations were foiled by Mario and his allies Mallow, Geno, Princess Peach, and (strangely enough) King Bowser. Occupied towns were liberated and the Star Pieces fell into the hands of Mario’s party.
Eventually, Mario’s band of heroes liberates Bowser’s Keep and enter Smithy’s dimension via Exor. Once there, they plan to eliminate the threat of Smithy and his weapons once for all. The heroes battle past mechanical minions and the factory’s management staff, eventually reaching the supreme leader of the Smithy Gang in his forge. Smithy is busy creating new weapons when Mario and company first meet him. As it turns out, Smithy had the last Star Piece embedded in his body, to prevent anyone from restoring the power of wishes to the world. Smithy calmly asks Mario to turn over his Star Pieces, and when Mario refuses, an epic battle commences.
Smithy has a variety of physical and magical attacks at his disposable. For starters, the mechanical leader wields a giant metal sledgehammer in battle, which he uses with his right hand. The fingers of his left hand have been fitted with small projectile launchers which he uses to fire bullets at Mario and his allies. Smithy also commands great magical power. He can summon a giant wooden sledgehammer to drop from the ceiling and crush all of Mario’s allies. Additionally, Smithy can summon powerful meteors to attack Mario’s party.
In battle, Smithy is aided by the creature Smelter. Smelter produces hot liquid metal from his mouth which Smithy then shapes into the mechanical minions known as Shypers. Shypers are one of the strongest minions in the Smithy Gang. Once created, Shypers automatically begin attacking Mario’s party. As such, it is wise for Mario and his allies to defeat Smelter first, cutting off Smithy’s unlimited supply of soldiers. After that, the heroes can focus their attacks on the diabolical Smithy.
Eventually, Mario and company defeat Smithy in combat. The mechanical leader becomes infuriated and begins slamming the floor with his sledgehammer. A few of his minions arrive, begging him to calm down and to stop smashing the floor (as it was just built the day before). However, an enraged Smithy ignores their warnings and keeps pounding the floor. As a result, the floor collapses; and Mario, his allies, and the diabolical Smithy fall into the basement of the factory. Once there, Smithy reveals his true form: he is not a bearded mechanical monster, he is a shape-shifter. Although his body remains the same, Smithy can use his sledgehammer to morph his head. Smithy has five heads that he can change into to:
- The normal head with average physical and magical attack and defense.
- The tank head, which has extremely powerful physical attacks.
- The magic head, which wields the most destructive magical attacks in the game.
- The mask head, used for increased protection and defense.
- And the treasure box head, which attacks Mario’s party with a random status ailment.
In this shape-shifting form, Smithy is nearly invincible. However, after a long and grueling battle, the courageous heroes overcome the many forms of Smithy, overloading Smithy’s body with heat. Ultimately, Smithy self-destructs, the last Star Piece is recovered, and peace returns to the Mushroom World.
Although it is not known, there may have been more than one Smithy. This is because when Mario and Smithy fall to the bottom of Smithy’s Factory, the floor is made up of thousands of Smithy heads. According to the Director, Smithy’s body is very unstable, and as such, it is prone to self-destruct. This means that the Smithy Mario fights may not be the first Smithy. Perhaps thousands of Smithys were created but they all self-destructed and were discarded in the bottom of the factory.
The Tank head 
The Wizard like head 
The Iron Box head 
The Treasure Box head
