δ Delta Species (TCG)

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δ Delta Species (Japanese: δ-デルタ δ-Delta Species) are a type of Pokémon found in the Pokémon Trading Card Game. The term is often shortened to δ, DS, or Delta. They first appeared in the EX Delta Species expansion, and were last released in the EX Dragon Frontiers expansion.

An example of a δ Delta Species Pokémon

According to the backstory offered in EX Delta Species, Pokémon become δ Delta Species upon exposure to electromagnetic waves, which were produced by scientists in Holon attempting to locate Mew. Why the scientists chose to use the Greek letter δ is unclear. While in science, the letter can be used to denote a change, the uppercase Δ would have been more appropriate, as that denotes a major change. Another common theory is that Delta is the fourth letter of the Greek alphabet, and δ Delta Species are the fourth sort of Pokémon after normal Pokémon, Pokémon-ex, Pokémon Star, and Dark Pokémon in the EX Series. Another possibility is that Delta Species has the same initials as the Nintendo DS, which was recently released at the time.

δ Delta Species are different from normal Pokémon in that their type is not the expected type for a Pokémon of their species; however, they still have the same weaknesses that a regular Pokémon of their species would have. For example, Charmander δ is a Lightning-type Pokémon, as opposed to a Fire-type, but remains weak to the Water-type rather than gaining a weakness to the Fighting-type.

Dual type Pokémon δ always have Metal as their secondary type, and it is nearly always fully evolved Pokémon or Legendary Pokémon that display this. However, with the release of EX Dragon Frontiers, no Pokémon δ displayed this Metal dual type, leading some to believe that these Pokémon became δ Delta Species naturally or the trait was outbred on the island habitats in which they live. Appearance-wise, δ Delta Species Pokémon do not differ from normal Pokémon other than an aura that denotes its type; some have a more distinct aura than others.

In EX Delta Species, if a δ Delta Species Pokémon had one of its types changed to something other than Metal, it was always either to Fire or Lightning. This is likely due to the fact that, since these two types are based upon one of the game types each, whereas others are based on more, all cards of those two types shared a single weakness among them: Water and Fighting, respectively. Thus, Fire Pokémon and Lightning Pokémon became more playable by diversifying their weaknesses. Later sets did not do this, however, and Delta Species Pokémon could be of any type.

Delta Species Pokémon had "δ Delta Species" between the name and HP, had double helix on the border of the artwork window, and the evolution box featured a δ design.

The designation of δ Delta Species does not affect the name of a Pokémon (e.g. a normal Dragonite can evolve from a Dragonair δ and vice versa). If a card wishes to reference δ Delta Species, it uses the text "Pokémon that has δ on its card".

Pokémon found as δ Delta Species

Pokémon δ Delta Species
Cards listed with a blue background are only legal to use in the current Expanded format.
Cards listed with a green background are legal to use in both the current Standard and Expanded formats.
Card Type English
Expansion
Rarity # Japanese
Expansion
Rarity #
Beedrill δ    EX Delta Species   1/113 Holon Research Tower   010/086
Crobat δ    EX Delta Species   2/113 Holon Research Tower   011/086
Dragonite δ    EX Delta Species   3/113 Holon Research Tower   039/086
Espeon δ    EX Delta Species   4/113 Holon Research Tower   049/086
Flareon δ    EX Delta Species   5/113 Holon Research Tower   018/086
Gardevoir δ    EX Delta Species   6/113 Holon Research Tower   050/086
Jolteon δ    EX Delta Species   7/113 Holon Research Tower   038/086
Latias δ    EX Delta Species   8/113 Holon Research Tower   041/086
Latios δ    EX Delta Species   9/113 Holon Research Tower   042/086
Marowak δ    EX Delta Species   10/113 Holon Research Tower   058/086
Metagross δ    EX Delta Species   11/113 Holon Research Tower   040/086
Mewtwo δ    EX Delta Species   12/113 Holon Research Tower   019/086
Rayquaza δ    EX Delta Species   13/113 Holon Research Tower   043/086
Salamence δ    EX Delta Species   14/113 Holon Research Tower   021/086
Starmie δ    EX Delta Species   15/113 Holon Research Tower   029/086
Tyranitar δ    EX Delta Species   16/113 Holon Research Tower   020/086
Umbreon δ    EX Delta Species   17/113 Holon Research Tower   069/086
Vaporeon δ    EX Delta Species   18/113 Holon Research Tower   030/086
Azumarill δ    EX Delta Species   19/113 Holon Research Tower Water Quarter Deck   006/015
Mightyena δ    EX Delta Species   24/113 Holon Research Tower   070/086
Sandslash δ    EX Delta Species   27/113 Holon Research Tower   057/086
Starmie δ    EX Delta Species   30/113 Holon Research Tower Water Quarter Deck   005/015
Dragonair δ   EX Delta Species   41/113 Holon Research Tower Lightning Quarter Deck   006/015
Dragonair δ   EX Delta Species   42/113 Holon Research Tower   035/086
Metang δ   EX Delta Species   49/113 Holon Research Tower   037/086
Pupitar δ   EX Delta Species   51/113 Holon Research Tower   014/086
Shelgon δ   EX Delta Species   53/113 Holon Research Tower Fire Quarter Deck   006/015
Shelgon δ   EX Delta Species   54/113 Holon Research Tower   017/086
Bagon δ   EX Delta Species   57/113 Holon Research Tower Fire Quarter Deck   005/015
Bagon δ   EX Delta Species   58/113 Holon Research Tower   016/086
Beldum δ   EX Delta Species   59/113 Holon Research Tower   036/086
Dratini δ   EX Delta Species   65/113 Holon Research Tower Lightning Quarter Deck   005/015
Dratini δ   EX Delta Species   66/113 Holon Research Tower   034/086
Eevee δ   EX Delta Species   68/113 Holon Research Tower   073/086
Larvitar δ   EX Delta Species   73/113 Holon Research Tower   013/086
Pikachu δ   EX Legend Maker   93/92 PCG-P Promotional cards   112/PCG-P
Nintendo Black Star Promos   35 PCG-P Promotional cards   113/PCG-P
Armaldo δ    EX Holon Phantoms   1/110 Holon Phantom   033/052
Cradily δ    EX Holon Phantoms   2/110 Holon Phantom   040/052
Deoxys δ   EX Holon Phantoms   3/110 Holon Phantom   037/052
Deoxys δ   EX Holon Phantoms   4/110 Holon Phantom   047/052
Deoxys δ   EX Holon Phantoms   5/110 Holon Phantom   035/052
POP Series 4   2/17 PCG-P Promotional cards   129/PCG-P
Deoxys δ   EX Holon Phantoms   6/110 Holon Phantom   022/052
Flygon δ    EX Holon Phantoms   7/110 Holon Phantom   003/052
Gyarados δ    EX Holon Phantoms   8/110 Holon Phantom   024/052
Kabutops δ   EX Holon Phantoms   9/110 Holon Phantom   021/052
Kingdra δ    EX Holon Phantoms   10/110 Holon Phantom   011/052
Latias δ   EX Holon Phantoms   11/110 Holon Phantom   010/052
Latios δ   EX Holon Phantoms   12/110 Holon Phantom   014/052
Omastar δ   EX Holon Phantoms   13/110 Holon Phantom   027/052
Pidgeot δ    EX Holon Phantoms   14/110 Holon Phantom   023/052
Raichu δ   EX Holon Phantoms   15/110 Holon Phantom   042/052
Rayquaza δ    EX Holon Phantoms   16/110 Holon Phantom   015/052
Vileplume δ    EX Holon Phantoms   17/110 Holon Phantom   028/052
Bellossom δ   EX Holon Phantoms   19/110 Holon Phantom   013/052
Latias δ   EX Holon Phantoms   21/110 PCG-P Promotional cards   120/PCG-P
Latios δ   EX Holon Phantoms   22/110 PCG-P Promotional cards   122/PCG-P
Mewtwo δ   EX Holon Phantoms   24/110 PCG-P Promotional cards   107/PCG-P
Rayquaza δ   EX Holon Phantoms   26/110 PCG-P Promotional cards   103/PCG-P
Aerodactyl δ   EX Holon Phantoms   35/110 Holon Phantom   009/052
Chimecho δ   EX Holon Phantoms   37/110 Holon Phantom   046/052
Exeggutor δ   EX Holon Phantoms   41/110 Holon Phantom   030/052
Gloom δ   EX Holon Phantoms   42/110 Holon Phantom   025/052
Golduck δ   EX Holon Phantoms   43/110 Holon Phantom   019/052
Persian δ    EX Holon Phantoms   48/110 Holon Phantom   039/052
Pidgeotto δ   EX Holon Phantoms   49/110 Holon Phantom   017/052
Primeape δ   EX Holon Phantoms   50/110 Holon Phantom   005/052
Seadra δ   EX Holon Phantoms   52/110 Holon Phantom   007/052
Sharpedo δ   EX Holon Phantoms   53/110 Holon Phantom   032/052
Vibrava δ   EX Holon Phantoms   54/110 Holon Phantom   002/052
Anorith δ   EX Holon Phantoms   57/110 Holon Phantom   045/052
Carvanha δ   EX Holon Phantoms   61/110 Holon Phantom   031/052
Exeggcute δ   EX Holon Phantoms   65/110 Holon Phantom   029/052
Horsea δ   EX Holon Phantoms   66/110 Holon Phantom   006/052
Kabuto δ   EX Holon Phantoms   67/110 Holon Phantom   020/052
Lileep δ   EX Holon Phantoms   68/110 Holon Phantom   036/052
Magikarp δ   EX Holon Phantoms   69/110 Holon Phantom   043/052
Mankey δ   EX Holon Phantoms   70/110 Holon Phantom   004/052
Meowth δ    EX Holon Phantoms   71/110 Holon Phantom   038/052
Oddish δ   EX Holon Phantoms   73/110 Holon Phantom   012/052
Omanyte δ   EX Holon Phantoms   74/110 Holon Phantom   026/052
Pichu δ   EX Holon Phantoms   76/110 Holon Phantom   044/052
Pidgey δ   EX Holon Phantoms   77/110 Holon Phantom   016/052
Pikachu δ   EX Holon Phantoms   79/110 Holon Phantom   041/052
Psyduck δ   EX Holon Phantoms   81/110 Holon Phantom   018/052
Trapinch δ   EX Holon Phantoms   84/110 Holon Phantom   001/052
Blastoise δ    EX Crystal Guardians   2/100 Miracle Crystal   049/075
Charizard δ    EX Crystal Guardians   4/100 Miracle Crystal   032/075
Ludicolo δ   EX Crystal Guardians   6/100 Miracle Crystal   014/075
Cacturne δ   EX Crystal Guardians   15/100 Miracle Crystal   048/075
Fearow δ   EX Crystal Guardians   18/100 Miracle Crystal   028/075
Grovyle δ   EX Crystal Guardians   19/100 Ocean's Kyogre ex Constructed Starter Deck   008/016
Kingler δ    EX Crystal Guardians   22/100 Miracle Crystal   017/075
Pelipper δ   EX Crystal Guardians   26/100 Miracle Crystal   029/075
Charmeleon δ   EX Crystal Guardians   30/100 Earth's Groudon ex Constructed Starter Deck   005/016
POP Series 5   5/17 PCG-P Promotional cards   133/PCG-P
Charmander δ   EX Crystal Guardians   49/100 Earth's Groudon ex Constructed Starter Deck   004/016
POP Series 5   10/17 PCG-P Promotional cards   132/PCG-P
Treecko δ   EX Crystal Guardians   68/100 Ocean's Kyogre ex Constructed Starter Deck   007/016
POP Series 4   15/17 PCG-P Promotional cards   131/PCG-P
Chimecho δ   POP Series 4   1/17 PCG-P Promotional cards   128/PCG-P
Ampharos δ   EX Dragon Frontiers   1/101 Offense and Defense of the Furthest Ends   051/068
Feraligatr δ   EX Dragon Frontiers   2/101 Offense and Defense of the Furthest Ends   026/068
Heracross δ   EX Dragon Frontiers   3/101 Offense and Defense of the Furthest Ends   009/068
Meganium δ   EX Dragon Frontiers   4/101 Offense and Defense of the Furthest Ends   045/068
Milotic δ   EX Dragon Frontiers   5/101 Offense and Defense of the Furthest Ends   013/068
Nidoking δ   EX Dragon Frontiers   6/101 Offense and Defense of the Furthest Ends   055/068
Nidoqueen δ   EX Dragon Frontiers   7/101 Offense and Defense of the Furthest Ends   060/068
Ninetales δ   EX Dragon Frontiers   8/101 Offense and Defense of the Furthest Ends   030/068
Pinsir δ   EX Dragon Frontiers   9/101 Offense and Defense of the Furthest Ends   042/068
Snorlax δ   EX Dragon Frontiers   10/101 Offense and Defense of the Furthest Ends   001/068
Togetic δ   EX Dragon Frontiers   11/101 Offense and Defense of the Furthest Ends   017/068
Typhlosion δ   EX Dragon Frontiers   12/101 Offense and Defense of the Furthest Ends   034/068
Arbok δ   EX Dragon Frontiers   13/101 Offense and Defense of the Furthest Ends   008/068
Cloyster δ   EX Dragon Frontiers   14/101 Offense and Defense of the Furthest Ends   039/068
Dewgong δ   EX Dragon Frontiers   15/101 Offense and Defense of the Furthest Ends   048/068
Gligar δ   EX Dragon Frontiers   16/101 Shockwave! Tyranitar ex Constructed Standard Deck   001/024
Jynx δ   EX Dragon Frontiers   17/101 Imprison! Gardevoir ex Constructed Standard Deck   001/024
Ledian δ   EX Dragon Frontiers   18/101 Offense and Defense of the Furthest Ends   062/068
Lickitung δ   EX Dragon Frontiers   19/101 Offense and Defense of the Furthest Ends   031/068
Mantine δ   EX Dragon Frontiers   20/101 Offense and Defense of the Furthest Ends   027/068
Quagsire δ   EX Dragon Frontiers   21/101 Offense and Defense of the Furthest Ends   006/068
Seadra δ   EX Dragon Frontiers   22/101 Offense and Defense of the Furthest Ends   041/068
Tropius δ   EX Dragon Frontiers   23/101 Offense and Defense of the Furthest Ends   063/068
Vibrava δ   EX Dragon Frontiers   24/101 Offense and Defense of the Furthest Ends   036/068
Xatu δ   EX Dragon Frontiers   25/101 Offense and Defense of the Furthest Ends   057/068
Bayleef δ   EX Dragon Frontiers   26/101 Offense and Defense of the Furthest Ends   044/068
Croconaw δ   EX Dragon Frontiers   27/101 Offense and Defense of the Furthest Ends   025/068
Dragonair δ   EX Dragon Frontiers   28/101 Offense and Defense of the Furthest Ends   003/068
Electabuzz δ   EX Dragon Frontiers   29/101 Shockwave! Tyranitar ex Constructed Standard Deck   007/024
Flaaffy δ   EX Dragon Frontiers   30/101 Offense and Defense of the Furthest Ends   050/068
Horsea δ   EX Dragon Frontiers   31/101 Offense and Defense of the Furthest Ends   040/068
Kirlia δ   EX Dragon Frontiers   33/101 Imprison! Gardevoir ex Constructed Standard Deck   004/024
Nidorina δ   EX Dragon Frontiers   34/101 Offense and Defense of the Furthest Ends   059/068
Nidorino δ   EX Dragon Frontiers   35/101 Offense and Defense of the Furthest Ends   054/068
Quilava δ   EX Dragon Frontiers   36/101 Offense and Defense of the Furthest Ends   033/068
Seadra δ   EX Dragon Frontiers   37/101 Shockwave! Tyranitar ex Constructed Standard Deck   006/024
Shelgon δ   EX Dragon Frontiers   38/101 Offense and Defense of the Furthest Ends   021/068
Smeargle δ   EX Dragon Frontiers   39/101 Imprison! Gardevoir ex Constructed Standard Deck   006/024
Swellow δ   EX Dragon Frontiers   40/101 Offense and Defense of the Furthest Ends   011/068
Togepi δ   EX Dragon Frontiers   41/101 Offense and Defense of the Furthest Ends   016/068
Vibrava δ   EX Dragon Frontiers   42/101 Imprison! Gardevoir ex Constructed Standard Deck   010/024
Bagon δ   EX Dragon Frontiers   43/101 Offense and Defense of the Furthest Ends   020/068
Chikorita δ   EX Dragon Frontiers   44/101 Offense and Defense of the Furthest Ends   043/068
Cyndaquil δ   EX Dragon Frontiers   45/101 Offense and Defense of the Furthest Ends   032/068
Dratini δ   EX Dragon Frontiers   46/101 Offense and Defense of the Furthest Ends   002/068
Ekans δ   EX Dragon Frontiers   47/101 Offense and Defense of the Furthest Ends   007/068
Elekid δ   EX Dragon Frontiers   48/101 Shockwave! Tyranitar ex Constructed Standard Deck   008/024
Feebas δ   EX Dragon Frontiers   49/101 Offense and Defense of the Furthest Ends   012/068
Horsea δ   EX Dragon Frontiers   50/101 Shockwave! Tyranitar ex Constructed Standard Deck   005/024
Larvitar δ   EX Dragon Frontiers   52/101 Shockwave! Tyranitar ex Constructed Standard Deck   002/024
Ledyba δ   EX Dragon Frontiers   53/101 Offense and Defense of the Furthest Ends   061/068
Mareep δ   EX Dragon Frontiers   54/101 Offense and Defense of the Furthest Ends   049/068
Natu δ   EX Dragon Frontiers   55/101 Offense and Defense of the Furthest Ends   056/068
Nidoran♀ δ   EX Dragon Frontiers   56/101 Offense and Defense of the Furthest Ends   058/068
Nidoran♂ δ   EX Dragon Frontiers   57/101 Offense and Defense of the Furthest Ends   053/068
Pupitar δ   EX Dragon Frontiers   59/101 Shockwave! Tyranitar ex Constructed Standard Deck   003/024
Ralts δ   EX Dragon Frontiers   61/101 Imprison! Gardevoir ex Constructed Standard Deck   003/024
Seel δ   EX Dragon Frontiers   62/101 Offense and Defense of the Furthest Ends   047/068
Shellder δ   EX Dragon Frontiers   63/101 Offense and Defense of the Furthest Ends   038/068
Smoochum δ   EX Dragon Frontiers   64/101 Imprison! Gardevoir ex Constructed Standard Deck   002/024
Swablu δ   EX Dragon Frontiers   65/101 Offense and Defense of the Furthest Ends   018/068
Taillow δ   EX Dragon Frontiers   66/101 Offense and Defense of the Furthest Ends   010/068
Totodile δ   EX Dragon Frontiers   67/101 Offense and Defense of the Furthest Ends   024/068
Trapinch δ   EX Dragon Frontiers   68/101 Imprison! Gardevoir ex Constructed Standard Deck   009/024
Trapinch δ   EX Dragon Frontiers   69/101 Offense and Defense of the Furthest Ends   035/068
Vulpix δ   EX Dragon Frontiers   70/101 Offense and Defense of the Furthest Ends   029/068
Wooper δ   EX Dragon Frontiers   71/101 Offense and Defense of the Furthest Ends   005/068
Mew δ   POP Series 5   3/17 PCG-P Promotional cards   148/PCG-P
Meowth δ   POP Series 5   11/17 PCG-P Promotional cards   127/PCG-P
Pikachu δ   POP Series 5   13/17 PCG-P Promotional cards   118/PCG-P
Pelipper δ   POP Series 5   14/17 PCG-P Promotional cards   140/PCG-P
Zangoose δ   POP Series 5   15/17 PCG-P Promotional cards   145/PCG-P
Mimikyu δ   SWSH Black Star Promos   SWSH136      
Pokémon-ex δ Delta Species
Card Type English
Expansion
Rarity # Japanese
Expansion
Rarity #
Sceptile ex δ   EX Crystal Guardians   96/100 Miracle Crystal   034/075
Altaria ex δ   EX Dragon Frontiers   90/101 Offense and Defense of the Furthest Ends   019/068
Dragonite ex δ   EX Dragon Frontiers   91/101 Offense and Defense of the Furthest Ends   004/068
Flygon ex δ   EX Dragon Frontiers   92/101 Offense and Defense of the Furthest Ends   037/068
Gardevoir ex δ   EX Dragon Frontiers   93/101 Imprison! Gardevoir ex Constructed Standard Deck   005/024
      Promo Card Pack 25th Anniversary Edition   015/025
Kingdra ex δ   EX Dragon Frontiers   94/101 Offense and Defense of the Furthest Ends   046/068
Latias ex δ   EX Dragon Frontiers   95/101 Offense and Defense of the Furthest Ends   014/068
Latios ex δ   EX Dragon Frontiers   96/101 Offense and Defense of the Furthest Ends   023/068
Rayquaza ex δ   EX Dragon Frontiers   97/101 Offense and Defense of the Furthest Ends   028/068
Salamence ex δ   EX Dragon Frontiers   98/101 Offense and Defense of the Furthest Ends   022/068
Tyranitar ex δ   EX Dragon Frontiers   99/101 Shockwave! Tyranitar ex Constructed Standard Deck   004/024
Pokémon   δ Delta Species
Card Type English
Expansion
Rarity # Japanese
Expansion
Rarity #
Gyarados   δ   EX Holon Phantoms   102/110 Holon Phantom   008/052
Charizard   δ   EX Dragon Frontiers   100/101 Offense and Defense of the Furthest Ends   052/068
Mew   δ   EX Dragon Frontiers   101/101 Offense and Defense of the Furthest Ends   015/068
 



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