Shadow Pokémon

Shadow Pokémon (Japanese: ダークポケモン Dark Pokémon) are that are being used for wrongful acts because they had the doors to their hearts shut artificially, a process created and carried out by Cipher in the Orre region. Collecting Shadow Pokémon through snagging and restoring them to normal by purifying them is the main goal of and .
==Creation and behavior==
Shadow Pokémon are created through an undisclosed process that removes the Pokémon's emotions, turning it into a soulless fighting machine. Ein, creator of the process and Cipher's head scientist at the time of Colosseum, refers to this process as "shutting the door to their hearts". In XD, Cipher's science division refines and upgrades the process, allowing many Shadow Pokémon to be produced simultaneously. The head of the science division, Cipher Admin Lovrina, works on creating an "XD-series" of Shadow Pokémon, the ultimate goal being to create one that is completely impossible to purify. 
While normal Pokémon are generally friendly and trusting creatures, Shadow Pokémon are not hesitant to attack with full force, using Shadow moves such as . Likewise, they do not attack only other Pokémon, and will actually attack Trainers. Shadow Pokémon can sometimes be overwhelmed by their emotions, indicating the relative instability of their Shadow state, and will sometimes enter a state known as Hyper Mode in Colosseum and Reverse Mode in XD. This state will be triggered more often the closer the Pokémon is to purification, making them generally more difficult to battle with until they are ultimately purified. A Pokémon in this state can be cured of it by calling to it in battle or use of a scent, as well as several other methods, or can recover on its own.
An interesting quirk about Shadow Pokémon is their inability to be differentiated from normal Pokémon by all but those with certain abilities or tools. Shadow Pokémon emit a normally invisible dark aura that normal Pokémon do not, which so far has only been able to be detected by Rui through an innate ability, and Michael with his Aura Reader. The only exception is Shadow Lugia, which takes on noticeable alterations, namely having jagged silver eyefins and possessing an overall darker complexion.
Shadow Pokémon cannot level up, and any experience and effort values they gain in battle will be held until they are purified, at which point they will be awarded en masse.
 will always fail if the target Pokémon is a Shadow Pokémon.
===Differences between Colosseum and XD===
Although the concept of Shadow Pokémon remains basically the same between the two games, there are some differences:
* The effectiveness of different purification actions in Colosseum is on average greater than the same actions in XD, but at the same time, the average magnitude of a Shadow Pokémon's full Heart Gauge is larger in Colosseum than in XD.
* Shadow Pokémon in the first game sometimes enter Hyper Mode, but in XD they enter Reverse Mode instead.
** In Hyper Mode, a Pokémon may attack its Trainer, but in Reverse Mode, they will not.
** While in Reverse Mode, a Pokémon hurts itself after every turn, whereas a Pokémon in Hyper Mode incurs no self-damage.
* In Pokémon Colosseum, Shadow Rush is always normally effective, but in Pokémon XD, Shadow moves are super effective on non-Shadow Pokémon and not very effective on other Shadow Pokémon.
* In Colosseum, the only Shadow move that Shadow Pokémon can know is , but in XD, Shadow Rush is one of many Shadow moves. Also, Shadow Rush's power is weaker in XD.
* In XD, Shadow Pokémon receive a 50% boost in battle.[needs testing]
==Relationship with Trainers==
Strangely enough, a Shadow Pokémon that isn't under the care of the player will not enter Hyper Mode / Reverse Mode or apparently reduce its Heart Gauge, although a Shadow Pokémon the player controls will purify itself just by being in the Trainer's party.
An important difference between Colosseum and XD is the number of Shadow Pokémon each Cipher member carries: in Colosseum, each NPC Trainer only carries one at a time; in XD there are many Trainers with two or more Shadow Pokémon in their team, the first one being encountered at the Cipher Key Lair, and the final boss of the game has seven Shadow Pokémon under his care. This may be a result of the large number of Shadow Pokémon in XD.
==Gameplay differences between Shadow and non-Shadow Pokémon==
The Trainer of a Shadow Pokémon cannot do any of the following with it until it is purified:
* Level it up (through battles, Rare Candy or Daycare)
* Evolve it using an Evolution stone (this is only relevant to Pokémon XD, as none of the Shadow Pokémon in Pokémon Colosseum evolve via Evolution stone)
* Change the order of or delete its moves
* Use a TM on it
* Give it a nickname (due to displaying an OT and ID of "?????")
* Trade it
* Participate in with it
* Enter it in battles at Phenac Stadium or Orre Colosseum
When a Shadow Pokémon is purified, it gains all of the experience it accumulated as a Shadow Pokémon. In Pokémon Colosseum, the Shadow Pokémon only starts accumulating experience once it has opened at least 2 bars on the heart gauge. In Pokémon XD, the Shadow Pokémon accumulates experience right away, but only gets 80% of the usual experience.
Shadow Pokémon are also unable to gain effort values from battling, although vitamins can still be used on them.
==Purification==
A Shadow Pokémon's purification process will begin as soon as it has been snagged, which is directly indicated by its Heart Gauge. Replacing the experience bar, the Heart Gauge monitors how close the Pokémon is to being fully purified, with the dark purple fill gradually depleting.
Pokémon can be purified from their Shadow state in several ways with varying effectiveness:
* Walking around: A Shadow Pokémon carried with the player in their party will open its heart a bit every 256 steps.
* Battling: A Shadow Pokémon sent into will open its heart a bit. Battling is also the only way a Shadow Pokémon can enter Hyper Mode or Reverse Mode.
* Calling: If a Shadow Pokémon is in Hyper Mode or Reverse Mode, calling to it will return it to its senses and open its heart somewhat.
* Massaging: Using special Scents, Shadow Pokémon can be massaged to open their heart.
* Day Care: In Colosseum only, a Shadow Pokémon put into the in Agate Village will open its heart for every 256 steps the player takes. In Pokémon XD, Shadow Pokémon are not accepted by the Day Care.
* Celebi: In Colosseum, using a Time Flute, the player can call to instantly purify a Shadow Pokémon.
* Purify Chamber: Between Pokémon Colosseum and Pokémon XD, a special chamber was developed in the Pokémon HQ Lab that can quickly purify Shadow Pokémon.
==Nature and stats==
A Shadow Pokémon, when encountered, is generated in the same way that a wild Pokémon is generated in the Generation III games, with its personality value and individual values generated together and no effort values. Shadow Pokémon don't have a set Nature or a set gender, but once encountered, the personality value, Nature and IVs are saved to the memory for the Shadow Monitor to be able to keep track of their exact status and location. This means that once a Shadow Pokémon is encountered for the first time, its Nature, IVs and gender will remain the same for the rest of the game, even if the player fails to capture it or is forced to re-battle it later.
===Shadow Boost===
In Pokémon XD only, Shadow Pokémon have a hidden "shadow boost" level which is implied by the + next to their level. This boosted level is only applied to the Shadow Pokémon before the player catches it. Most Shadow Pokémon are a few levels higher than the level shown on screen while this boost is applied. Boosted Pokémon gain between 1-3 levels while boosted with the exact level being fixed for each Shadow Pokémon. Some Shadow Pokémon don't have any boost at all and are thus battled at their actual level. Regardless of whether or not the Pokémon actually has a boosted level, their level is always displayed with a + next to it if it could be boosted (i.e. before it has been caught).
==List of Shadow Pokémon==
==Shiny Shadow Pokémon==
Because whether a Pokémon is depends on its Original Trainer and personality value, and snagging a Shadow Pokémon from an NPC changes its Original Trainer but not its personality value, a Shadow Pokémon can be Shiny for the player even if it is not for its NPC Trainer (and vice versa).
In , there is a roughly 1/8192 chance of a Shadow Pokémon being Shiny. When a Shadow Pokémon is first encountered, it is assigned a random personality value, but the game ensures that the personality value does not cause it to be Shiny for its NPC Trainer (using that Trainer's Trainer ID and Secret ID). When the player catches the Shadow Pokémon, because it retains that same personality value but now has a different Trainer ID and Secret ID, it is possible for the Shadow Pokémon to be Shiny for the player. In subsequent encounters, the Shadow Pokémon retains the same personality value it had in the first encounter (meaning that whether it is Shiny for the player or not cannot change); however, because its NPC Trainer's Trainer ID and Secret ID can differ, it can be Shiny for its NPC Trainer in these subsequent encounters.
Purification has no effect on the Shiny status of a Pokémon: Shiny Pokémon remain Shiny, and non-Shiny Pokémon cannot become Shiny.
In , when the game calculates a personality value for a Shadow Pokémon, it ensures that the Pokémon will not be Shiny for the player or the NPC Trainer.
==In other games==
===Pokkén Tournament===
In November 2015, a new character called Shadow Mewtwo (Japanese: ダークミュウツー Dark Mewtwo) was revealed for Pokkén Tournament, notably having the same prefix as the Shadow Pokémon in Colosseum and XD in both Japanese and English. In the past, was almost possessed by a Shadow Synergy Stone but was saved by Mewtwo, whom the Shadow Synergy Stone took control of and merged with instead. Under the influence of the Shadow Synergy Stone, Shadow Mewtwo traveled around Ferrum, draining Gaia power from the normal Synergy Stones and continually increasing its own power. Shadow Mewtwo is eventually defeated in battle by the player, after which Anne uses the power of the Synergy Stone contained in her brooch to separate the Shadow Synergy Stone from Mewtwo and restore it to normal.
===Pokémon GO===
A similar mechanic appeared in Pokémon GO in July 2019. Although it shares the same prefix as Shadow Pokémon in Colosseum and XD in English, German, Spanish, French, and Italian, it has a different prefix in Japanese.
==Trivia==
* Shadow Pokémon are the only kind of Pokémon that can be from another .
* is the only Shadow Pokémon that can have a varying moveset. Normally knowing if snagged in The Under or Realgam Tower, Suicune instead knows if it is snagged in Deep Colosseum.
* Internal files suggest Pokémon Colosseum was meant to include more Shadow Pokémon, including multiple mentions of a Shadow .
* The tutorial for the Purify Chamber shows a Shadow , but no Trainer has one to snag.
==In other languages==
==Related articles==
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Category:Pokémon Colosseum
Category:Pokémon XD
Category:Terminology
Category:Variant Pokémon
Category:Game mechanics
Category:Methods of obtaining Pokémon
de:Crypto-Pokémon
es:Pokémon oscuro
fr:Pokémon Obscur (jeux vidéo)
it:Pokémon Ombra
ja:ダークポケモン
zh:黑暗宝可梦