Gender unknown

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Egg Groups
Monster Human-Like
Water 1 Water 3
Bug Mineral
Flying Amorphous
Field Water 2
Fairy Ditto
Grass Dragon
No Eggs Discovered
Gender unknown

Gender unknown (Japanese: 性別不明 sex unknown) is a gender designation that species of Pokémon can have. Pokémon such as Voltorb, Staryu, and Mew that display neither a nor symbol in battle or on their summary screen are gender-unknown Pokémon.

In-universe, no one has been able to determine the gender of these Pokémon, including scientists.[1][2][3]


In English-language official media, these Pokémon are generally referred to as being gender unknown,[4][5][6][7][8][9][1][2][10] as having or being of unknown gender,[11][12][13][14][15][16] or simply by stating that their gender is unknown[17][18][4][19][20][21][3][22][23][24][25][26][16][27][10][28]. As a prenominal adjective, it is generally hyphenated, such as in "gender-unknown Pokémon",[24][2][10] though it has also appeared without being hyphenated, such as in "gender unknown Pokémon"[1].

Alternate terms that have been used officially include:

In Pokémon Diamond, Pearl, Platinum, Brilliant Diamond, and Shining Pearl, Picnicker Siena on Route 205 mentions that there are some Pokémon whose gender can't be toldDPBDSP/that are neither male nor femalePt; both of these merely correspond to usages of 「性別不明"sex unknown" in Japanese.[38][39][40]

The Japanese versions of the games also refer to gender-unknown Pokémon as having (Japanese: せいべつなし no gender, formatted in kanji as 性別なし no gender in Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! and Pokémon HOME on the Nintendo Switch) in the search feature of the Pokémon Storage System and Pokémon HOME.[18][19][7]

As an Egg Group

In Pokémon Stadium 2 and in official Japanese and Chinese guidebooks for the Generation II and III games, Gender unknown also refers to an Egg Group consisting of gender-unknown Pokémon that are able to breed with Ditto. In these sources, gender-unknown Pokémon are listed in this Egg Group rather than in their actual Egg Groups. While Pokémon Diamond and Pearl: Official Nintendo Player's Guide also lists Gender Unknown as an Egg Group, it lists the Pokémon with their real Egg Groups in the data section.

In Pokémon Emerald: Prima's Official Strategy Guide and early Japanese official guidebooks for Pokémon Ruby and Sapphire, gender-unknown Pokémon are instead listed in the No Eggs group, likely due to Ditto not being available without tradingRS/until after obtaining the National Pokédex in the Desert UnderpassE. Official guidebooks since Generation IV consistently list gender-unknown Pokémon in their actual Egg Groups.


Gender-unknown Pokémon (except Ditto) can only breed with Ditto. However, many gender-unknown Pokémon are in the No Eggs Discovered group, meaning that those Pokémon cannot breed at all. Ditto itself can be bred with any Pokémon that can breed (except Ditto), but the Eggs produced are always based on the other Pokémon's species.

In battle, gender-unknown Pokémon are immune to gender-based effects. They cannot become infatuated nor infatuate other Pokémon. The moves Attract and Captivate fail if used by or on these Pokémon. The Abilities Cute Charm and Rivalry do not affect gender-unknown Pokémon, and have no effect if possessed by them.



#   Pokémon Type Egg Groups
081 081 Magnemite Electric Steel Mineral
082 082 Magneton Electric Steel Mineral
100 100 Voltorb Electric Mineral
101 101 Electrode Electric Mineral
120 120 Staryu Water Water 3
121 121 Starmie Water Psychic Water 3
137 137 Porygon Normal Mineral
233 233 Porygon2 Normal Mineral
292 292 Shedinja Bug Ghost Mineral
337 337 Lunatone Rock Psychic Mineral
338 338 Solrock Rock Psychic Mineral
343 343 Baltoy Ground Psychic Mineral
344 344 Claydol Ground Psychic Mineral
374 374 Beldum Steel Psychic Mineral
375 375 Metang Steel Psychic Mineral
376 376 Metagross Steel Psychic Mineral
436 436 Bronzor Steel Psychic Mineral
437 437 Bronzong Steel Psychic Mineral
462 462 Magnezone Electric Steel Mineral
474 474 Porygon-Z Normal Mineral
479 479 Rotom
Normal Rotom
Electric Ghost Amorphous
479 479O Rotom
Heat Rotom
Electric Fire Amorphous
479 479W Rotom
Wash Rotom
Electric Water Amorphous
479 479R Rotom
Frost Rotom
Electric Ice Amorphous
479 479F Rotom
Fan Rotom
Electric Flying Amorphous
479 479L Rotom
Mow Rotom
Electric Grass Amorphous
489 489 Phione Water Water 1/Fairy
490 490 Manaphy Water Water 1/Fairy
599 599 Klink Steel Mineral
600 600 Klang Steel Mineral
601 601 Klinklang Steel Mineral
615 615 Cryogonal Ice Mineral
622 622 Golett Ground Ghost Mineral
623 623 Golurk Ground Ghost Mineral
703 703 Carbink Rock Fairy Fairy/Mineral
774 774 Minior Rock Flying Mineral
781 781 Dhelmise Ghost Grass Mineral
854 854 Sinistea Ghost Mineral/Amorphous
855 855 Polteageist Ghost Mineral/Amorphous
870 870 Falinks Fighting Fairy/Mineral


#   Pokémon Type Egg Groups
132 132 Ditto Normal Ditto
144 144 Articuno Ice Flying No Eggs Discovered
144G 144G Articuno Psychic Flying No Eggs Discovered
145 145 Zapdos Electric Flying No Eggs Discovered
145G 145G Zapdos Fighting Flying No Eggs Discovered
146 146 Moltres Fire Flying No Eggs Discovered
146G 146G Moltres Dark Flying No Eggs Discovered
150 150 Mewtwo Psychic No Eggs Discovered
151 151 Mew Psychic No Eggs Discovered
201 201 Unown Psychic No Eggs Discovered
243 243 Raikou Electric No Eggs Discovered
244 244 Entei Fire No Eggs Discovered
245 245 Suicune Water No Eggs Discovered
249 249 Lugia Psychic Flying No Eggs Discovered
250 250 Ho-Oh Fire Flying No Eggs Discovered
251 251 Celebi Psychic Grass No Eggs Discovered
377 377 Regirock Rock No Eggs Discovered
378 378 Regice Ice No Eggs Discovered
379 379 Registeel Steel No Eggs Discovered
382 382 Kyogre Water No Eggs Discovered
383 383 Groudon Ground No Eggs Discovered
384 384 Rayquaza Dragon Flying No Eggs Discovered
385 385 Jirachi Steel Psychic No Eggs Discovered
386 386 Deoxys
Normal Forme
Psychic No Eggs Discovered
386 386A Deoxys
Attack Forme
Psychic No Eggs Discovered
386 386D Deoxys
Defense Forme
Psychic No Eggs Discovered
386 386S Deoxys
Speed Forme
Psychic No Eggs Discovered
480 480 Uxie Psychic No Eggs Discovered
481 481 Mesprit Psychic No Eggs Discovered
482 482 Azelf Psychic No Eggs Discovered
483 483 Dialga Steel Dragon No Eggs Discovered
484 484 Palkia Water Dragon No Eggs Discovered
486 486 Regigigas Normal No Eggs Discovered
487 487 Giratina
Altered Forme
Ghost Dragon No Eggs Discovered
487 487O Giratina
Origin Forme
Ghost Dragon No Eggs Discovered
491 491 Darkrai Dark No Eggs Discovered
492 492 Shaymin
Land Forme
Grass No Eggs Discovered
492 492S Shaymin
Sky Forme
Grass Flying No Eggs Discovered
493 493 Arceus Normal No Eggs Discovered
494 494 Victini Psychic Fire No Eggs Discovered
638 638 Cobalion Steel Fighting No Eggs Discovered
639 639 Terrakion Rock Fighting No Eggs Discovered
640 640 Virizion Grass Fighting No Eggs Discovered
643 643 Reshiram Dragon Fire No Eggs Discovered
644 644 Zekrom Dragon Electric No Eggs Discovered
646 646 Kyurem
Normal Kyurem
Dragon Ice No Eggs Discovered
646 646B Kyurem
Black Kyurem
Dragon Ice No Eggs Discovered
646 646W Kyurem
White Kyurem
Dragon Ice No Eggs Discovered
647 647 Keldeo
Ordinary Form
Water Fighting No Eggs Discovered
647 647R Keldeo
Resolute Form
Water Fighting No Eggs Discovered
648 648 Meloetta
Aria Forme
Normal Psychic No Eggs Discovered
648 648P Meloetta
Pirouette Forme
Normal Fighting No Eggs Discovered
649 649 Genesect Bug Steel No Eggs Discovered
716 716 Xerneas Fairy No Eggs Discovered
717 717 Yveltal Dark Flying No Eggs Discovered
718 718 Zygarde Dragon Ground No Eggs Discovered
719 719 Diancie Rock Fairy No Eggs Discovered
720 720 Hoopa
Psychic Ghost No Eggs Discovered
720 720U Hoopa
Psychic Dark No Eggs Discovered
721 721 Volcanion Fire Water No Eggs Discovered
772 772 Type: Null Normal No Eggs Discovered
773 773 Silvally Normal No Eggs Discovered
785 785 Tapu Koko Electric Fairy No Eggs Discovered
786 786 Tapu Lele Psychic Fairy No Eggs Discovered
787 787 Tapu Bulu Grass Fairy No Eggs Discovered
788 788 Tapu Fini Water Fairy No Eggs Discovered
789 789 Cosmog Psychic No Eggs Discovered
790 790 Cosmoem Psychic No Eggs Discovered
791 791 Solgaleo Psychic Steel No Eggs Discovered
792 792 Lunala Psychic Ghost No Eggs Discovered
793 793 Nihilego Rock Poison No Eggs Discovered
794 794 Buzzwole Bug Fighting No Eggs Discovered
795 795 Pheromosa Bug Fighting No Eggs Discovered
796 796 Xurkitree Electric No Eggs Discovered
797 797 Celesteela Steel Flying No Eggs Discovered
798 798 Kartana Grass Steel No Eggs Discovered
799 799 Guzzlord Dark Dragon No Eggs Discovered
800 800 Necrozma Psychic No Eggs Discovered
801 801 Magearna Steel Fairy No Eggs Discovered
802 802 Marshadow Fighting Ghost No Eggs Discovered
803 803 Poipole Poison No Eggs Discovered
804 804 Naganadel Poison Dragon No Eggs Discovered
805 805 Stakataka Rock Steel No Eggs Discovered
806 806 Blacephalon Fire Ghost No Eggs Discovered
807 807 Zeraora Electric No Eggs Discovered
808 808 Meltan Steel No Eggs Discovered
809 809 Melmetal Steel No Eggs Discovered
880 880 Dracozolt Electric Dragon No Eggs Discovered
881 881 Arctozolt Electric Ice No Eggs Discovered
882 882 Dracovish Water Dragon No Eggs Discovered
883 883 Arctovish Water Ice No Eggs Discovered
888 888 Zacian Fairy No Eggs Discovered
889 889 Zamazenta Fighting No Eggs Discovered
890 890 Eternatus Poison Dragon No Eggs Discovered
893 893 Zarude Dark Grass No Eggs Discovered
894 894 Regieleki Electric No Eggs Discovered
895 895 Regidrago Dragon No Eggs Discovered
896 896 Glastrier Ice No Eggs Discovered
897 897 Spectrier Ghost No Eggs Discovered
898 898 Calyrex Psychic Grass No Eggs Discovered

In the anime

In To Catch a Rotom!, after Iris tries to have her Emolga use Attract on three Rotom, Professor Oak remarks that Rotom are neither male nor female.[41]

In other languages

Gender unknown

Language Title
Chinese Cantonese 性別不明 Singbiht Bātmìhng
Mandarin 性別不明 / 性别不明 Xìngbié Bùmíng
France Flag.png French Sexe inconnu
Germany Flag.png German Geschlecht unbekanntNew Pokémon Snap
Unbekanntes GeschlechtHOME
Geschlecht ?Stad2
Italy Flag.png Italian Sesso sconosciutoHOME
Genere sconosc.Stad2
South Korea Flag.png Korean 성별 불명 Seongbyeol Bulmyeong
Brazil Flag.png Brazilian Portuguese Gênero desconhecido
Russia Flag.png Russian Пол неизвестен Pol neizvesten
Spain Flag.png Spanish Sexo desconocidoHOME, New Pokémon Snap
Género no conocidoStad2
Thailand Flag.png Thai เพศไม่แน่ชัด Phet Mainaechat
Turkey Flag.png Turkish Cinsiyet bilinmiyor


Language Title
Chinese Cantonese 不明 Bātmìhng
Mandarin 不明 Bùmíng
Denmark Flag.png Danish Ukendt
The Netherlands Flag.png Dutch Onbekend
Finland Flag.png Finnish Tuntematon
France Flag.png French Inconnu
Germany Flag.png German Unbekannt
Israel Flag.png Hebrew לא ידוע Lo Yadu'a
Italy Flag.png Italian Sconosciuto
South Korea Flag.png Korean 불명 Bulmyeong
Norway Flag.png Norwegian Ukjent
Portugal Flag.png Portuguese Desconhecido
Russia Flag.png Russian Неизвестно Neizvestno
Spain Flag.png Spanish Desconocido
Sweden Flag.png Swedish Okänt
Thailand Flag.png Thai ไม่แน่ชัด Mainaechat
Turkey Flag.png Turkish Belirsiz
Vietnam Flag.png Vietnamese Chưa xác định

Unknown[18][19]/Gender unknown[7]

Language Title
Chinese Cantonese 無性別 Mòuh Singbiht
Mandarin 無性別 Wú Xìngbié *
性别无 Xìngbié Wú *
France Flag.png French ?
InconnuHOME (mobile)
Germany Flag.png German Unbekannt
Italy Flag.png Italian Sconosciuto
Non specificatoB2W2
South Korea Flag.png Korean 성별 없음 Seongbyeol Eopseum
성별없음 Seongbyeol EopseumB2W2
Spain Flag.png Spanish Desconocido


  1. 1.0 1.1 1.2 Pokémon Sun & Pokémon Moon: The Official Strategy Guide, p. 288-9; excerpt: "scientists have been unable to determine any gender for them"
  2. 2.0 2.1 2.2 Pokémon Ultra Sun & Pokémon Ultra Moon: The Official Alola Region Strategy Guide, p. 359-60; excerpt: "no one's been able to determine their gender"
  3. 3.0 3.1 Pokémon Black 2 and White 2: An NPC in the Floccesy Pokémon Center, with a gender-unknown Pokémon in the first slot of the party: "Your <Pokémon>... Its gender is unknown." (Japanese: 「あなたの <Pokémon>って…… 性別が わからないのね!」 "Your <Pokémon>... I can't tell what gender it is!")
  4. 4.0 4.1 Pokémon Stadium 2: "Gender unknown" is listed as an Egg Group at Earl's Pokémon Academy; a Pokémon's gender can be described as "unknown"
  5. Pokémon Bank: "Gender Unknown" can be selected as a search option
  6. Pokémon HOME (Nintendo Switch): "Gender unknown" can be selected as a filter under "Form" in the Pokédex
  7. 7.0 7.1 7.2 Pokémon HOME (mobile): "Gender unknown" can be selected as a search option
  8. Pokémon GO: genderunknown can be used as a search filter
  9. New Pokémon Snap: "Gender Unknown" is a possible value for the "Gender" field in the Photodex
  10. 10.0 10.1 10.2 Pokémon Sword & Pokémon Shield: The Official Galar Region Strategy Guide, p. 234-5
  11. Pokémon X and Y: A scientist on Sycamore Pokémon Lab 2F says "There are male Pokémon, female Pokémon, and even Pokémon with unknown genders." (Japanese: 「ポケモンには オスと メス そして 性別不明が います」)
  12. The Details of Discovering Pokémon Eggs | "When Ditto is paired with a Pokémon in the Day Care, the Pokémon that hatches from the Egg you find will be the same as (or an Evolution of) the paired Pokémon, whether it is male, female, or of unknown gender."
  13. Pokémon Brilliant Diamond and Pokémon Shining Pearl Trainers Guide | Raising and Evolving Pokémon | Official Website | Pokémon: "Not only can Ditto be paired with male or female Pokémon, it's also the only Pokémon that's known to be compatible with Pokémon of unknown gender."
  14. 14.0 14.1 Pokémon Diamond and Pearl Pokédex, p. 394; excerpt: "Some Pokémon don't have a gender"
  15. 15.0 15.1 Pokémon Platinum: Prima's Official Strategy Guide, p. 384
  16. 16.0 16.1 Pokémon Black and White Pokédex, p. 123
  17. Pokémon Gold, Silver, and Crystal: In the party screen, the text "Male", "Female", or "Unknown" is displayed for each Pokémon when depositing a Pokémon at the Day Care
  18. 18.0 18.1 18.2 Pokémon Black 2, White 2, X, Y, Omega Ruby, Alpha Sapphire, Sun, Moon, Ultra Sun, Ultra Moon, Let's Go, Pikachu!, Let's Go, Eevee!, Sword, Shield, Brilliant Diamond, Shining Pearl, and Legends: Arceus: "Unknown" can be selected as a filter under "Gender" in the Pokémon Storage System
  19. 19.0 19.1 19.2 Pokémon HOME (Nintendo Switch): "Unknown" can be selected as a filter under "Gender" in the Pokémon List
  20. Pokédex 3D, Pokédex 3D Pro, Pokédex for iOS: "Unknown" is a possible value for the "Gender" field
  21. Poké Pokédex: "Unknown" is a possible value for the "Gender" field
  22. Pokémon Video Game Glossary | "The gender of a Pokémon is designated as male, female, or unknown."
  23. Pokémon Diamond and Pearl Pokédex, p. 10
  24. 24.0 24.1 Pokémon HeartGold and SoulSilver: Prima's Official Strategy Guide, p. 184-5
  25. Pokémon HeartGold and SoulSilver: Prima's Official Strategy Guide, p. 198
  26. Pokémon Black and White Pokédex, p. 10, 212, 214, 288
  27. Pokémon HeartGold and SoulSilver: Prima's Official Strategy Guide, p. 198
  28. Electric- and Steel-Type Egg Event | News | Pokémon Masters EX official site: "The gender of Pokémon listed with △ are unknown."
  29. Train, Raid, and Hatch Pokémon to Breed Victories in Pokémon Sword and Pokémon Shield |
  30. 30.0 30.1 Pokémon Gold and Silver: Official Nintendo Player's Guide, p. 95
  31. 31.0 31.1 Pokémon Crystal: Official Nintendo Player's Guide, p. 25
  32. Pokémon Diamond and Pearl: Official Nintendo Player's Guide, p. 32
  33. Pokémon Diamond and Pearl: Prima's Official Strategy Guide, p. 273
  34. 34.0 34.1 Pokémon Gold and Silver: Complete Pokédex, p. 37-8
  35. Letters to the Editor! | 11/27/2003 | The Official Site (archived)
  36. Letters to the Editor! | 1/17/2003 | The Official Site (archived)
  37. Play! Pokémon Video Game Rules, Formats & Penalty Guidelines - October 23, 2019, February 13, 2020 (archived): "A genderless Pokémon is listed as male or female on the team list."
  38. Pokémon Diamond and Pearl: Picnicker Siena on Route 205 says "What can I tell you about Pokémon? Well, there are males and females. And some that you can't tell!" (Japanese: 「ポケモンで しってること? そうねー ポケモンには メスと オス それと せいべつふめいが いるよ!」)
  39. Pokémon Platinum: Picnicker Siena on Route 205 says "I know all sorts of things about Pokémon! Let's see... There are males and females, and some aren't either!" (Japanese: 「あたし ポケモンに くわしいよ! えっとー ポケモンには メスと オス それと せいべつふめいが いるの!」)
  40. Pokémon Brilliant Diamond and Shining Pearl: Picnicker Siena on Route 205 says "What can I tell you about Pokémon? Well, there are males and females. And some that you can't tell." (Japanese: 「ポケモンで ってること? そうねー ポケモンには メスと オス それと 性別不明が いるよ!」)
  41. To Catch a Rotom!: Professor Oak says "I'm afraid Rotom are neither male nor female. And that's the reason Attract had no effect on them." (Japanese: 「いや、ロトムにオスとメスの区別はないぞ。だから、メロメロの効果を受けないんじゃ。」 )

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