Ditto uses the Limber Ability, which gives it an immunity to Paralysis. Its Hidden Ability is Imposter, which changes Ditto into the opponent as soon as it enters battle, copying all stats and stat changes all the while.
Ditto does not evolve into any other Pokémon.
Ditto has its own egg group, allowing it to breed with any Pokémon that's breed-able. However, breeding two Ditto won't produce a Ditto Egg because Ditto isn't able to breed by itself. It takes Ditto 1,000,000 Experience Points to reach Level 100.
Ditto is a blob-like Pokemon capable of taking other forms.
Ditto is genderless.
Ditto can be caught in the wild at Route 13, Route 14, Route 15, Route 23 and Cerulean Cave in Pokémon Red and Blue. In Pokémon Yellow, it can found at Cerulean Cave and Pokémon Mansion. In Pokémon Gold, Silver and Crystal, Ditto can be found at Route 34 and Route 35.
Ditto can be found in the wild at Route 218 using the PokéRadar in Pokémond Diamond and Pearl. In Pokémon Platinum, it can be found at the Trophy Garden as a Daily Pokémon. In Pokémon HeartGold and SoulSilver, it appears at Route 35, Route 47, Cerulean Cave as well as the Wetland area of the Safari Zone.
Ditto can be caught in the wild at Pokémon Village in Pokémon X and Y, as well as in the Friend Safari. In Pokémon Omega Ruby and Alpha Sapphire, it appears at the Mirage Island near Route 132 and the Mirage Cave north of Route 132.
Ditto can appear anywhere, including Mr. Who's Den, in Pokémon Trozei!
Ditto can appear at Frosty Forest 4F-9F, Fiery Field on floors 10 & 20, Buried Relic 16F-24F & 26F-34F, Wish Cave 53-64F, Joyous Tower 53F-64F and Oddity Cave B1-B15 in the original Mystery Dungeon games. Ditto appears at Chasm Cave B1-B8 and Sky Stairway 1F-49F in Explorers of Time, Explorers of Darkness and Explorers of Sky, but Ditto cannot be recruited at Chasm Cave.
Ditto appears in all three version of Pokémon Mystery Dungeon 3.
Ditto appears inside the Oblivia Region Air Fortress in the West Observation Room on floor three as a Boss in Pokémon Ranger: Guardian Signs, the only appearance for Ditto in the Pokémon Ranger subseries.
Trading Card Game
Ditto is listed in a total of seven different sets and a total of 18 cards including Pokémon Organized Play Series 3, in which it is listed as a Common Card. Ditto is listed as a Common Card in the Skyridge and EX Delta Species (4) sets, an Uncommon Card in the EX Delta Species set (6), and as a Rare Card in the Fossil (2), Gym Challenge (Koga), EX FireRed and Leaf Green, Legends Awakened and Triumphant sets.
AnimeDtto's Mysterious Mansion, owned by Duplica. Duplica would make a second appearance with her Ditto in the episode Imitation Confrontation, in which her second Ditto, nicknamed Minidit because it can't adjust its height when using Transform.
To begin Ash's battle against the Leader of the Orange League Drake, Drake sent out a Ditto, which transformed into Ash's Pikachu. The imitation strategy gave Ash and Pikachu all they could handle, but Ash's Pikachu was able to defeate Drake's Ditto.
Most recently, a trainer named Narissa used two Ditto in the episode Dealing With a Fierce Double Ditto Drama!, one of which was a "Shiny" Ditto.
A Wild Ditto appears in the Pikachu Short "Pikachu's Ghost Festival," the only appearance for Ditto in any of the films as of writing.
Ditto is in the PU tier of competitive battling. Due to having a very unique ability in Imposter, Ditto can pass as a revenge killer against set-up sweepers with a Choice Scarf in every single tier from PU to Ubers, but its viability is usually very low in each tier due to numerous flaws. Ditto suffers against defensive teams in each tier due to its lack of usefulness when going up against Pokémon that are passive in nature or bulky set-up sweepers like Calm Mind users. It can also be predictable and easily played around due to the opponent knowing what set Ditto is copying. Ditto cannot copy the opposing Pokémon if the Pokémon is behind a Substitute, and it also has a pitiful base 48 HP stat alongside only 5 PP moves, meaning that it can be PP stalled or worn down with ease by other attacks or entry hazards.
Ironically, while Ditto tests poorly in many tiers due to its one-dimensional nature, it is most viable in the Uber tier of competitive battling. While it suffers from many of the flaws previously mentioned, Ditto can carve a niche out mainly due to the plethora of set-up sweepers in the Uber tier. Pokémon like Geomancy Xerneas, Rock Polish Primal Groudon, and weakened Extreme Killer Arceus can be revenge killed and will be discouraged from setting up due to the presence of Ditto. Hyper offense is a prominent playstyle in the tier, so Ditto is not as lackluster as it is in other tiers. However, it does not mean that Ditto is a force in the metagame, as its predictability, uselessness against many support Pokémon like Mega Sableye and support Arceus formes, and inability to copy a Pokémon behind a Substitute render it useless against many other team archetypes.
Ditto learns no moves by TM/HM.
Ditto learns no moves by breeding.
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