General Information
Universe Pokémon
Aliases コクモ, Kokumo (Juvenile)
ツーへッド, Tsuuheddo (Adult)
Alpha Spinarak / Alpha Ariados
Classification Theridion tsuuheddo
Species Type Cobweb Spider
Environment Johto Region
Intelligence Semi-sapient
Biochemistry Carbon-based lifeform
Biological Information
Reproduction Sexual; lays eggs
Locomotion Hexapodal movement
Feeding Behavior Omnivorous liquivore
Distinctive Features Head horns, facial markings on abdomen
Eye Color Black
Lineage Information
Related Species Ariados, Happy-face Spider, Pumpkin Twohead
Cultural Information
Alignment True Neutral
Organization Solitary
Language(s) Can understand the language of their trainer
Sociocultral characteristics
Scientific Taxonomy
Domain Eukaryota (Complex organisms)
Kingdom Animalia (Animals)
Subkingdom Eumetazoa
Infrakingdom Bilateria (Animals with bilateral symmetry)
Superphylum Ecdysozoa
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Suborder Opisthothelae
Infraorder Araneomorphae (Araneomorphs — Fangs point diagonally forward and cross in a pinching action)
Family Theridiidae (Cobweb Spiders)
Genus Theridion
Species tsuuheddo (Somarinoa, 2020)
Other Information
Status Extinct (presumed)
Creator Arceus
First Sighting 1997
Last Sighting 2018
Possible Population 0

Twoheads were a species of cobweb spider closely related to the Pumpkin Twohead, the Ariados, and to a lesser extent the Happy-faced Spider. It was endemic to the Johto region. It was discovered only briefly in 1997, and evidence of its existence was revealed in 2018. It is now considered to be extinct, possibly out-competed by the much more successful Ariados.



Juveniles were known as Kokumo.

When a Twohead is born it is know as a Kokumo. These juveniles are difficult to differentiate from the juveniles of Ariados, known as Spinaraks. Notable differences are that the tip of their abdomen is slightly more pointed instead of the rounded edge of a Spinarak's abdomen, and their fangs are black instead of red. Since all known images of Twoheads are monochromatic, it is unknown if their colors were different than their contemporaries, though the related Pumpkin Twohead is known to be primarily purple and red.

Similar to Ariados, Twoheads have lost one pair of legs which never develop in the egg and do not grow in during any of its moults. The same has happened with six of their pairs of eyes, and as such they only rely on their primary base of eyes. Facial markings on the back of the body make it appear that they have a second set of eyes, but these are false and presumably meant to deter predators.

Upon reaching maturity, the juvenile's singular horn splits into two and their fangs lighten in color. The abdomen markings become more dreadful in appearance.


  • Pokemon Gold and Silver Versions, Spaceworld 1997 iteration (First appearance)
    • This version of the eventual finalized Pokémon Ariados was scrapped before the game's final release, first replaced with the "Pumpkin Twohead" before being finalized upon release.
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