EX Delta Species (Japanese: Research Tower of Holon) is the name given to an Expansion of cards and Theme Decks for the Pokémon Trading Card Game. It is the first Expansion to feature δ Delta Species.

Set size

• 114 cards in English release
• 86 cards in Japanese release

Sequence

• 26th English Expansion
• 28th Japanese Expansion

Release dates

• 7th October 2005 - Japanese Half Decks
• 28th October 2005 - Japanese Expansion
• 31st October 2005 - English Expansion

Prereleases were held on the weekends of 22nd/23rd and 29th/30th October 2005.

Trivia

• The English set was released before Eidolon Forest (Eidolon Forest was before Research Tower of Holon in Japan), as there was a mix-up with translations. This once again threw the English sets out of sequence with the Japanese sets. Because of this, the English set was only a few days behind the release of the Japanese set. However, the Prereleases were held before the commercial release of the Japanese set, making this the first set in history to be revealed for the first time outside Japan.
• The set reveals the Holon Research Tower, located in the middle of Eidolon Forest (already introduced in Japan; introduced in the next English set); it is the home of scientists who conduct research on Mew and strange new Pokémon. These Pokémon have been altered by a wave of electromagnetic radiation produced by an experiment gone awry at Holon labs. The result - δ Delta Species.
• These new Pokémon possess types different from their original and some, in their fully evolved forms, are partially Metal-types. They could be considered as the counterpart to Dark Pokémon in the EX series.
• EX Delta Species also introduces Holon's Pokémon, which are unique as they can double as Special Energy cards, and new Trainer cards which centralise themselves around the Holon Tower community.
• Similar to cards belonging to Team Magma, Team Aqua and Team Rocket, the card layout was visually enhanced for δ Delta Species Pokémon: -
  • δ Delta Species Pokémon have a character window with a "double helix" effect.
  • They have "δ Delta Species" next to the character name.
  • They sport a "δ" symbol where the evolution stage is situated, with the evolution window being part of the "δ" in Stage 1 and Stage 2 Pokémon.
• This set contains only 3 Pokémon ex, a record low for any set in the EX series.
• The holographic rare design changed exclusively for δ Delta Species Pokémon, with the card border and Pokémon itself featuring a plain holographic treatment.
• The reverse-holographic design for this set is similar to that of the new holographic rare treatment, with same foil used but only on the background image. In addition to the background, name text and rarity symbol, the reverse-holographic versions of the holographic rares now have a holographic border and HP text. All reverse-holographics feature the EX Delta Species set logo.
• The secret box-topper card for this set is Azumarill.
• The Prerelease card for this set is Metang δ.

Theme decks

• Breakthrough
• Steeplechase

Half decks

• Vaporeon
• Jolteon
• Flareon

Card list

English expansion

No.	Card Name	Type	Rarity
1	Beedrill δ		File:Rare rare.gifH
2	Crobat δ		File:Rare rare.gifH
3	Dragonite δ		File:Rare rare.gifH
4	Espeon δ		File:Rare rare.gifH
5	Flareon δ		File:Rare rare.gifH
6	Gardevoir δ		File:Rare rare.gifH
7	Jolteon δ		File:Rare rare.gifH
8	Latias δ		File:Rare rare.gifH
9	Latios δ		File:Rare rare.gifH
10	Marowak δ		File:Rare rare.gifH
11	Metagross δ		File:Rare rare.gifH
12	Mewtwo δ		File:Rare rare.gifH
13	Rayquaza δ		File:Rare rare.gifH
14	Salamence δ		File:Rare rare.gifH
15	Starmie δ		File:Rare rare.gifH
16	Tyranitar δ		File:Rare rare.gifH
17	Umbreon δ		File:Rare rare.gifH
18	Vaporeon δ		File:Rare rare.gifH
19	Azumarill δ		File:Rare rare.gif
20	Azurill		File:Rare rare.gif
21	Holon's Electrode		File:Rare rare.gif
22	Holon's Magneton		File:Rare rare.gif
23	Hypno		File:Rare rare.gif
24	Mightyena δ		File:Rare rare.gif
25	Porygon2		File:Rare rare.gif
26	Rain Castform		File:Rare rare.gif
27	Sandslash δ		File:Rare rare.gif
28	Slowking		File:Rare rare.gif
29	Snow-Cloud Castform		File:Rare rare.gif
30	Starmie δ		File:Rare rare.gif
31	Sunny Castform		File:Rare rare.gif
32	Swellow		File:Rare rare.gif
33	Weezing		File:Rare rare.gif
34	Castform		File:Rare uncom.gif
35	Ditto		File:Rare uncom.gif
36	Ditto [Bulbasaur]		File:Rare uncom.gif
37	Ditto [Charmander]]		File:Rare uncom.gif
38	Ditto [Mr. Mime]]		File:Rare uncom.gif
39	Ditto [Pikachu]]		File:Rare uncom.gif
40	Ditto [Squirtle]]		File:Rare uncom.gif
41	Dragonair δ		File:Rare uncom.gif
42	Dragonair ō		File:Rare uncom.gif
43	Golbat		File:Rare uncom.gif
44	Hariyama		File:Rare uncom.gif
45	Illumise		File:Rare uncom.gif
46	Kakuna		File:Rare uncom.gif
47	Kirlia		File:Rare uncom.gif
48	Magneton		File:Rare uncom.gif
49	Metang δ		File:Rare uncom.gif
50	Persian		File:Rare uncom.gif
51	Pupitar δ		File:Rare uncom.gif
52	Rapidash		File:Rare uncom.gif
53	Shelgon δ		File:Rare uncom.gif
54	Shelgon δ		File:Rare uncom.gif
55	Skarmory		File:Rare uncom.gif
56	Volbeat		File:Rare uncom.gif
57	Bagon δ		File:Rare com.gif
58	Bagon δ		File:Rare com.gif
59	Beldum δ		File:Rare com.gif
60	Cubone		File:Rare com.gif
61	Ditto [Charmander]]		File:Rare com.gif
62	Ditto [Geodude]]		File:Rare com.gif
63	Ditto [Pikachu]]		File:Rare com.gif
64	Ditto [Squirtle]]		File:Rare com.gif
65	Dratini δ		File:Rare com.gif
66	Dratini δ		File:Rare com.gif
67	Drowzee		File:Rare com.gif
68	Eevee δ		File:Rare com.gif
69	Eevee		File:Rare com.gif
70	Holon's Magnemite		File:Rare com.gif
71	Holon's Voltorb		File:Rare com.gif
72	Koffing		File:Rare com.gif
73	Larvitar δ		File:Rare com.gif
74	Magnemite		File:Rare com.gif
75	Makuhita		File:Rare com.gif
76	Marill		File:Rare com.gif
77	Meowth		File:Rare com.gif
78	Ponyta		File:Rare com.gif
79	Poochyena		File:Rare com.gif
80	Porygon		File:Rare com.gif
81	Ralts		File:Rare com.gif
82	Sandshrew		File:Rare com.gif
83	Slowpoke		File:Rare com.gif
84	Staryu		File:Rare com.gif
85	Staryu		File:Rare com.gif
86	Taillow		File:Rare com.gif
87	Weedle		File:Rare com.gif
88	Zubat		File:Rare com.gif
89	Dual Ball	T	File:Rare uncom.gif
90	Great Ball	T	File:Rare uncom.gif
91	Holon Farmer	T	File:Rare uncom.gif
92	Holon Lass	T	File:Rare uncom.gif
93	Holon Mentor	T	File:Rare uncom.gif
94	Holon Research Tower	T	File:Rare uncom.gif
95	Holon Researcher	T	File:Rare uncom.gif
96	Holon Ruins	T	File:Rare uncom.gif
97	Holon Scientist	T	File:Rare uncom.gif
98	Holon Transceiver	T	File:Rare uncom.gif
99	Master Ball	T	File:Rare uncom.gif
100	Super Scoop Up	T	File:Rare uncom.gif
101	Potion	T	File:Rare com.gif
102	Switch	T	File:Rare com.gif
103	Darkness Energy	E	File:Rare rare.gif
104	Holon Energy FF	E	File:Rare rare.gif
105	Holon Energy GL	E	File:Rare rare.gif
106	Holon Energy WP	E	File:Rare rare.gif
107	Metal Energy	E	File:Rare rare.gif
108	Flareon ex		File:Rare rare.gifex
109	Jolteon ex		File:Rare rare.gifex
110	Vaporeon ex		File:Rare rare.gifex
111	Groudon File:Shiningsymbol.gif		File:Rare ssrare.gifH
112	Kyogre File:Shiningsymbol.gif		File:Rare ssrare.gifH
113	Metagross File:Shiningsymbol.gif		File:Rare ssrare.gifH
114	Azumarill		File:Rare rare.gifH

Japanese expansion

No.	Card Name	Type	Rarity
1	Weedle		File:Rare com.gif
2	Kakuna		File:Rare com.gif
3	Zubat		File:Rare com.gif
4	Golbat		File:Rare com.gif
5	Koffing		File:Rare com.gif
6	Weezing		File:Rare rare.gif
7	Ditto		File:Rare rare.gif
8	Volbeat		File:Rare rare.gif
9	Illumise		File:Rare rare.gif
10	Beedrill δ		File:Rare rare.gifH
11	Crobat δ		File:Rare rare.gifH
12	Ditto [Charmander]		File:Rare rare.gif
13	Larvitar δ		File:Rare com.gif
14	Pupitar δ		File:Rare uncom.gif
15	Bagon δ		File:Rare com.gif
16	Shelgon δ		File:Rare uncom.gif
17	Sunny Castform		File:Rare rare.gif
18	Flareon δ		File:Rare rare.gifH
19	Mewtwo δ		File:Rare rare.gifH
20	Salamence δ		File:Rare rare.gifH
21	Tyranitar δ		File:Rare rare.gifH
22	Slowpoke		File:Rare com.gif
23	Staryu		File:Rare com.gif
24	Ditto [Squirtle]		File:Rare rare.gif
25	Slowking		File:Rare rare.gif
26	Rain Castform		File:Rare rare.gif
27	Snow-Cloud Castform		File:Rare rare.gif
28	Kyogre File:Shiningsymbol.gif		File:Rare ssrare.gifH
29	Starmie δ		File:Rare rare.gifH
30	Vaporeon δ		File:Rare rare.gifH
31	Holon's Voltorb		File:Rare uncom.gif
32	Holon's Electrode		File:Rare rare.gif
33	Ditto [Pikachu]		File:Rare rare.gif
34	Dratini δ		File:Rare com.gif
35	Dragonair ō		File:Rare uncom.gif
36	Beldum δ		File:Rare com.gif
37	Metang δ		File:Rare uncom.gif
38	Jolteon δ		File:Rare rare.gifH
39	Dragonite δ		File:Rare rare.gifH
40	Metagross δ		File:Rare rare.gifH
41	Latias δ		File:Rare rare.gifH
42	Latios δ		File:Rare rare.gifH
43	Rayquaza δ		File:Rare rare.gifH
44	Drowzee		File:Rare com.gif
45	Hypno		File:Rare rare.gif
46	Ditto [Mr. Mime]		File:Rare rare.gif
47	Ralts		File:Rare com.gif
48	Kirlia		File:Rare com.gif
49	Espeon δ		File:Rare rare.gifH
50	Gardevoir δ		File:Rare rare.gifH
51	Sandshrew		File:Rare com.gif
52	Cubone		File:Rare com.gif
53	Ditto [Geodude]		File:Rare rare.gif
54	Makuhita		File:Rare com.gif
55	Hariyama		File:Rare rare.gif
56	Groudon File:Shiningsymbol.gif		File:Rare ssrare.gifH
57	Sandslash δ		File:Rare rare.gif
58	Marowak δ		File:Rare rare.gifH
59	Meowth		File:Rare com.gif
60	Persian		File:Rare rare.gif
61	Ditto		File:Rare rare.gif
62	Porygon		File:Rare com.gif
63	Porygon2		File:Rare rare.gif
64	Taillow		File:Rare com.gif
65	Swellow		File:Rare rare.gif
66	Azurill		File:Rare uncom.gif
67	Castform		File:Rare rare.gif
68	Poochyena		File:Rare com.gif
69	Umbreon δ		File:Rare rare.gifH
70	Mightyena δ		File:Rare rare.gif
71	Holon's Magnemite		File:Rare uncom.gif
72	Holon's Magneton		File:Rare rare.gif
73	Eevee δ		File:Rare com.gif
74	Skarmory		File:Rare uncom.gif
75	Metagross File:Shiningsymbol.gif		File:Rare ssrare.gifH
76	Holon Transceiver	T	File:Rare uncom.gif
77	Holon Scientist	T	File:Rare uncom.gif
78	Holon Research Tower	T	File:Rare uncom.gif
79	Holon Mentor	T	File:Rare uncom.gif
80	Holon Farmer	T	File:Rare uncom.gif
81	Holon Lass	T	File:Rare uncom.gif
82	Holon Researcher	T	File:Rare uncom.gif
83	Holon Ruins	T	File:Rare uncom.gif
84	Holon Energy GL	E	File:Rare uncom.gif
85	Holon Energy FF	E	File:Rare uncom.gif
86	Holon Energy WP	E	File:Rare uncom.gif

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