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A Yo-kai Ark (Japanese: 妖怪アーク Yōkai āku) is a small, key-shaped item used to summon Yo-kai from the Yo-kai Watch Elder in the Yo-kai Watch Shadowside series. They are said to be the successor of Yo-kai Medals, featuring Lightside and Shadowside Yo-kai on both sides.

Rare versions with different colors also exist. The levels of rarity from least to more rare are Normal, Rare, Extreme Rare, Super Extreme Rare, and Ultimate Rare.[1]

It has been stated that Normal Arks have a clear color and a regular holo foil, Rare Arks have a clear color and a glittering holo foil, and Extreme Rare Arks have the colors of their tribes, as well as glittering holo foil.

There are also Shining Arks that are equal to Super Extreme Rare ones, and Gold Arks that are equal to Extreme Rare ones.


Yo-kai Watch Shadowside Oni-o no Fukkatsu

Natsume holding Yo-kai Arks.

Yo-kai Arks represent the feelings that connect Yo-kai and humans. Just like Yo-kai Medals, they are given to select people once they fulfill a specific Yo-kai's needs.

Yo-kai can be summoned via the Yo-kai Watch Elder by putting the Ark into the keyhole, and saying the summoning chant while the Yo-kai appears in sight.

It was originally thought that the Arks were successors to the medals, however, due to their inclusion in Forever Friends, they may have existed in the past as well.

List of Arks

Main article: List of Yo-Kai Ark Sets (Asian)
Yo-kai Lightside Shadowside Ark Type


JibanyanArk-Lightside JibanyanArk-Shadowside Rare
Mafura Jibanyan
MafuraJibanyan LightsideArk
MafuraJibanyan ShadowsideArk
Extreme Rare
Komasan KomasanArk-Lightside KomasanArk-Shadowside Rare
Koumou no Komasan


Koumou no Komasan Koumou no Komasan-Shadow Extreme Rare
KomasanAndKomajiro LightsideArk
KomasanAndKomajiro ShadowsideArk
Extreme Rare
Hungramps Hungramps HungrampsSS Normal
Blizzaria BlizzariaArk-Light BlizzariaArk-Shadow Rare
Kyubi KyubiArk-Light KyubiArk-Shadow Rare
Kosen Kyubi


Kosen Kyubi Kosen Kyubi SM Extreme Rare
Venoct VenoctLS VenoctSS Rare
Venoct (Extreme Rare) ExtremeRareOrochi LightArk ExtremeRareOrochi ShadowArk Extreme Rare
Micchy (Slimamander) MicchyLS Slimamander Rare
Hyper Micchy/ Mitsumata Ghidorah Hyper Micchy Mitsumata Ghidorah (Hyper Micchy) Extreme Rare
Blazion BlazionLS BlazionSS Rare
Sakigake Merameraion


SakigakeMerameraion LightsideArk SakigakeMerameraion ShadowsideArk Extreme Rare
Papa Bolt
RaiOton LightsideArk
RaiOton ShadowsideArk
Azure Dragon Azure Dragon Azure DragonSS Rare
Toadal Dude
Tsuchinoko LightsideArk
Tsuchinoko ShadowsideArk
Super Extreme Rare (Legendary)
Jaou Kaira Kaira KairaSS Super Extreme Rare (Shining)
Shutendoji Thurston ThurstonSS Super Extreme Rare (Shining)
Douketsu Douketsu DouketsuSS Rare
Junior/? Junior JuniorUnknownShadow Rare
Junior/Burning Dragon Junior (Extreme Rare) Burning Dragon (Junior) Extreme Rare
Bancho/Bourei Banchou BanchoArk-Light Bourei BanchouArk-Shadow Normal
Charlie/Ghostcycle CharlieArk-Light Ghostcycle (Charlie)Ark-Shadow Normal
Zundoumaru/Shiryou no Dokudoku-nabe
Zundoumaru Ark
ShiryouNoDokudokuNabe Ark
Jinta/Jingeki Jinta Jingeki (Jinta) Normal
Lucky/Dogman LuckyArk-Light Dogman (Lucky) Normal
Pakkun/Gaburiel Pakkun Gaburiel (Pakkun) Normal
Robonyan 00 Robonyan 00 Robonyan 00SS Normal
Honmaguro-taishou/Magulodon Honmaguro-taishouArk-Light Magulodon (Honmaguro-taishou)Ark-Shadow Normal
Mushbarber/Kirisaki Joker MushbarberArk-Light Kirisaki Joker (Mushbarber)Ark-Shadow Normal
Ikarin Ark
Gesodrill Ark
Inari/Tatarigitsune Inari Tatarigitsune (Inari) Normal
Semicolon/Semilong Semicolon Semilong (Semicolon) Normal
Shibumenken Ark
MenkuEater Ark
Filmlin Ark
Eigalien Ark
Leon/Dr. Chameleon
Leon Ark
DrChameleon Ark
Ogu, Togu & Mogu Ogu, Togu & Mogu Ogu, Togu & MoguSS Extreme Rare


Nekomata NekomataSS Extreme Rare (Gold)
Nekomata & Junior


Kappa Kappa KappaUnknownShadow Extreme Rare (Gold)
Suu-san Suu-san Suu-sanSS Extreme Rare (Gold)
ZashikiWarashi LightsideArk
ZashikiWarashi ShadowsideArk
Extreme Rare (Gold)


Type Box Packet Release date Ark No.
Yo-kai Ark 1st - Open! First Door Yo-kai Ark 1st - Hiragame! First Door Box Yo-kai Ark 1st - Hiragame! First Door JPJuly 14, 2018
1 Yo-kai Ark per single, 10 random Yo-kai Arks in a single pack.

14 (+1 Gold) different Yo-kai Arks to collect.

1 Gold

3 Extreme Rare

5 Rare

6 Normal

Yo-kai Ark 2nd - Shine! Debut of the Shining Yokai Arks!! Yo-kai Ark 2nd (Box) Yo-kaiArk2nd DebutOfTheShiningArks JPSeptember 15, 2018
1 Yo-kai Ark per single, 10 random Yo-kai Arks in a single pack.

14 (+1 Secret) different Yo-kai Arks to collect.

2 Super Extreme Rare (2 of which are Shining)

2 Extreme Rare (1 of which is Gold)

5 Rare

5 Normal

Yo-kai Ark 3rd - Obtain them! Legendary Yo-kai! Yo-kai Ark 3rd - Obtain them! Legendary Yo-kai! Packet JPNovember, 2018
1 Yo-kai Ark per single, 10 random Yo-kai Arks in a single pack.

14 (+2 Secret) different Yo-kai Arks to collect.

1 Super Extreme Rare (Legendary)

3 Extreme Rare (1 of which is Gold)

3 Rare

7 Normal



Jibanyan's Ark with the Charming heart insignia.

  • In early depictions of the Arks, including their debut in the 4th movie, they had the insignias of the old Yo-kai tribes. These were later replaced by the symbols of the Shadowside tribes.


  2. Included with the DX Yo-kai Watch Elder
  3. Included with the DX Yo-kai Ark Holder.
  4. Included with the DX Youseiken Series 02.
  5. Included with the DX Youseiken Series 03.
  6. Included with the pre-order for advance screening tickets of Yo-kai Watch: Forever Friends before the DX Yo-kai Watch Elder's release
  7. The Grand Prize of the Yo-kai Ark Design contest during the August 2018 issue of CoroCoro magazine