Ukkomon is an Ancient Fairy Digimon. It is an ancient phantom Digimon whose activity records remain in the ancient Digital World. Rumors suppose that Ukkomon can grant the wishes of others, which is why it is said that many other Digimon gathered around it, flourished, and formed villages. However, as records of Ukkomon were cut off with the catastrophic destruction of the ancient Digital World, this Digimon is thought to have been wiped out.[2] It is a Digimon with a cute appearance that resembles a slippery marine creature. Its voice is adorable too.[3]


  • Whirlpool Spin: Spins its body like a top, then crashes into foes.
  • Liar Dream: Locks eyes with the enemy, then hijacks their consciousness.


Ukkomon's design is based on the Naked Sea Butterfly (Clione limacina).[4]


Ukkomon (ウッコモン)

Official romanization given by the Digimon Reference Book and used in the franchise.


The name Ukkomon was chosen by Yamatoya Akatsuki. It was chosen to be a Naked Sea Butterfly to convey a sense of "the original Digimon" with a form close to that of an atom or a single-celled organism in addition to its cute appearance and the unexpected aspect when it preys. Kenji Watanabe's original design for Ukkomon was changed after Tomohisa Taguchi told him he already had an image in mind for Ukkomon and as such Watanabe changed the design to match that. As Ukkomon was to be the first Digimon to make contact with a human child, Watanabe decided to make the design a simple primitive creature. Its eyes were designed to be similar to the first Digimon that were created, and were shaped and colored similar to Agumon's.[4]


Digimon Adventure 02: The Beginning[]

Main article: Ukkomon (Adventure)

Digimon Liberator[]

When Shoto Kazama and Arisa Kinosaki go to City Center Jewel to report their encounter with Frozen Knight to the GMs they walk past a duellist who is looking at his copy of P-123: Ukkomon. Shrinking Violet (Part 1)

Digimon Masters[]

Ukkomon was an obtainable Digimon for Korean players that was given away as part of a promotion for Digimon Adventure 02: The Beginning.

Vital Bracelet BE[]

Ukkomon is an obtainable Rookie level Digimon on the D-3 White and Red DIM card. It digivolves from Poromon, and can digivolve to BigUkkomon.

Notes and references[]