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Shedinja (Japanese: ヌケニンNukenin) is a dual-type Bug/Ghost Pokémon.
It is considered a "special" evolution of Nincada, appearing only when Nincada evolves into Ninjask, starting at level 20, and there is an extra space in the player's party and the player has an extra Poké Ball. An extra Poké Ball is not necessary to obtain Shedinja in Generation III.
Shedinja's body is based on an insect's shed exoskeleton. Therefore, its body is completely hollow (it possesses no internal organs). The shell consists of chitin and is entirely incapable of movement. As it is the shed shell of a fully developed Ninjask, it has a similar shape to the latter. Shedinja's entire body is brown in color; the abdomen is of a darker shade. There are four protrusions where Ninjask's limbs were growing. What appears to be its eyes are actually slits; perhaps formerly for the Ninjask the shell housed to look through. Shedinja has one pair of what appear to be tattered "wings" on its back, which is actually where the exoskeleton was torn by Ninjask to break free of the shell. Between its "wings" there is a hole, out of which the Ninjask escaped. Each "wing" divides into three smaller pieces. These "wings" actually don't perform any function, as Shedinja's body is immobile and levitates. Two horizontal lines circle its abdomen. A white halo constantly floats above its head.
Gender differences
Shedinja is a genderless species.
Special abilities
It is rumored that if a human peers into its back, the human's soul will be stolen. This rumor was never mentioned in the anime.
Shedinja is impervious to direct-damage from all attacks that its type combination isn't weak to due to its signature Ability, Wonder Guard. However, any direct damage from attacks that Shedinja is weak to or any form of indirect damage will always knock it out.
Behavior
Shedinja appear to be wise and intelligent Pokémon. They are also very quiet and stealthy, like a ninja. They are protective over Ninjask but otherwise very little is known about them.
Shedinja first appeared when Aqua Admin Amber, having been deprived of his Pokémon after being abandoned by Archie, borrows a Nincada from his comrade Shelly, which then immediately evolves into a Ninjask, putting Wattson in quite a pinch with the incredible speed it gained by the minute. Although the old Gym leader eventually managed to defeat it, a Shedinja formed from the shell Ninjask shed and attacked him from behind, sending him sinking into the ocean.
Several more volumes down the line, both Emerald and Greta used Shedinja to exploit its Wonder Guard ability, as well as the fact that it has one base HP, requiring no items to resuscitate itself.
Shedinja's hard body doesn't move - not even a twitch. In fact, its body appears to be merely a hollow shell. It is believed that this Pokémon will steal the spirit of anyone peering into its hollow body from its back.
Shedinja is a peculiar Pokémon. It seems to appear unsought in a Poké Ball after a Nincada evolves. This bizarre Pokémon is entirely immobile - it doesn't even breathe.
Note: In Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness, Shedinja will not be mentioned when evolving Nincada, but will subsequently appear in Chimecho's Assembly.
A Poké Ball is removed from the bag upon obtaining a Shedinja through evolution. The Poké Ball must be a basic Poké Ball.
A Poké Ball is not needed to obtain Shedinja in the Generation III games, where it copies the ball Nincada was in. This is the only legitimate way to get a Shedinja in a non-standard Poké Ball.
Shedinja has the lowest base stat total of all fully evolved Pokémon.
Shedinja is one of only three Pokémon, other than baby Pokémon, to have a different egg group than its evolutionary relatives, being in the Mineral egg group while Nincada and Ninjask are in the Bug group. It cannot breed normally with Mineral group Pokémon either way, however, as it has no gender. The other two Pokémon that share this trait are Nidorina and Nidoqueen.
A Shedinja that appears upon the evolution of a Nincada will not be nicknamed. After Generation III, its Poké Ball will always be the normal kind. Its IVs and EVs are inherited by the creating Nincada, as are its OT and ID numbers. In Generation III, its Poké Ball is inherited from Nincada.
Due to its ability, Shedinja has the most immunities out of all Pokémon, with 12.
Shedinja is the only Pokémon that has a base stat total of 236.
Prior to Generation V, if Nincada learns a move upon evolving into Ninjask, Shedinja will also know this move. This means that Shedinja can learn any of Ninjask's level up moves starting at level 20, but only the ones learned at the same level. In Generation V, Shedinja starts with the moves Nincada knew prior to evolution.
Shedinja is the only genderless Pokémon that can learn egg moves. However, Staryu and Starmie could also learn moves via breeding in Gold and Silver.
Shedinja and Froslass are the only two Ghost types that evolve from a Pokémon that isn't a Ghost type.
Even though looking into the crack on Shedinja's back is said to steal one's spirit, all of Shedinja's back sprites display it perfectly, yet no negative effects happen to the player in-game.
1 HP trivia
Shedinja has the lowest base HP and its base HP stat is also the lowest base stat number of all Pokémon. Due to its 1 HP, Shedinja has many unique characteristics:
Shedinja is the only Pokémon whose HP IV and base stat cannot be determined, due to it always having the same amount of HP. To figure out a Shedinja's HP IV, one must find out the HP IV of the Ninjask that shed it.
Shedinja is the only Pokémon who cannot gain any additional HP EVs.
Shedinja gives 2 EVs in HP when defeated in battle, despite having the lowest HP of all Pokémon.
Despite it being able to learn Substitute and Rest, they will always fail.
Shedinja can still be under the effects of Substitute if given one through Baton Pass.
Since Shedinja has only one HP, its Defense and Special Defense stats normally have no purpose in battle. However, if Shedinja receives a Substitute through Baton Pass, its Defense and Special Defense are factored into damage the Substitute takes. Shedinja's Defense and Special Defense stats are also used when a Pokémon uses Transform on a Shedinja, and when Shedinja uses Power Trick via Mimic.
Shedinja is the only Pokémon that has its HP restored to maximum when leveled up with a Rare Candy or revived with a Revive.
Shedinja's Final Gambit will always do 1 HP damage to an opponent.
Shedinja is the only fully evolved Pokémon that has lower base stat total than its pre-evolved form, due to its HP base stat of 1.
If Shedinja holds a Focus Sash and it is triggered, the item will be consumed and leave Shedinja at full HP.
It is based on the shed husk that cicadas leave behind when they finish their metamorphosis into adults. It may also be based on a guardian angel, due to the halo-like object floating above its head. Its ability Wonder Guard probably alludes to this.
Name origin
Shedinja's name is a combination of shed, casting off skin or exoskeleton, and ninja.
Nukenin is a combination of 抜け殻 nukegara, casting off skin, and 忍者 ninja. Nukenin is also a term describing ninja who have abandoned their clan and lord.
This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.