High School DxD Wiki
High School DxD Wiki

Youkai (妖怪, Yōkai) are a group of various species of supernatural beings native to Asia shown in High School DxD.


Various Youkai species in Kyoto

Depending upon their specific species, Youkai have a plethora of different forms, ranging from the fox-like kitsune (such as Kunou and Yasaka) to the cat-eared Nekomata (such as Koneko and Kuroka). However, most Youkai either possess a human-like form with animalistic accents or have to shapeshift to assume such a form.


The abilities of each Youkai differs in accordance to the species. There are two distinctive types of Youkai, the Japanese Youkai and the Chinese Youkai. There are Youkai who have shown the ability to rival an Ultimate-Class Devil and are commonly known as Daiyoukai (大妖怪, Daiyōkai, lit. "Great Youkai"). A handful of Youkai races are capable of shifting from their true forms to appear more human-like as a way to blend among them. All Youkai species are capable of preforming Youjutsu, a form of spellcraft unique only to them.


Similar to creatures of darkness such as Devils and Vampires, Youkai have a weakness to light and light-based powers.[1]

Types of Youkai


Kitsune are fox-like Youkai known for their ability to control fire.

  • Kyuubi (九尾の狐, Nine-Tailed Fox) are a special variant of golden Kitsune limited to the bloodline of the leader of Kyoto differentiated by their nine-tails compared to Kitsune who has one.


Nekomata are cat Youkai capable of using Senjutsu and Youjutsu.

  • Nekoshou (猫魈, Nekoshō) is a special variant of Nekomata and are the strongest among their types. Nekoshou is high-level Youkai species that are capable of mastering both Youjutsu and Senjutsu.

Monkey Youkai

Monkey Youkai are youkai that have the physical resemblances to that of a monkey.


Yuki-onna are a rare race of ice Youkai. Portrayed in legend as looking like beautiful women, their true appearance is of large white ape-like beasts with a freezing breath that can freeze an opponent in seconds. Also known as Yeti.


A race of aquatic Youkai that live in swamps. Noted for having plates on their head and fondness for cucumbers. Kappa's have an illness known as "plate shortening disease".


Karasu-Tengu are bird-like Youkai with black wings and crow heads, dressed like mountain hermits.


Nue are Chimera-like Youkai with the face of a monkey, the limbs of a tiger, and a snake for a tail.

  • One of these Youkai currently resides within Souji Okita.


Nurarihyon are humanoid Youkai that have the appearance of an old man with a gourd-shaped head, that break into other people's homes and act as if it is it's own home. The only known member of this race is the Youkai leader under the same name. He apparently knew Kuroka and Koneko's mother


Kamaitachi are Youkai with ferret-like features.

Lightning Beast

Lighting Beasts are dog-like Youkai with a cloud around their bodies that gives off sparkling lightning.


A clan of Magic Mirror Youkai who are able to show the past of someone via someone related to them.


West Youkai Faction

The West Youkai Faction, also known as the Kyoto Youkai Faction, are a group of Youkais that are led by Yasaka. The members of this faction reside in Kyoto, on the other side of Kyoto called Urakyoto, which is a alternate dimension created in a similar way of Devils Rating Game fields. In Volume 9, Serafall Leviathan came to Kyoto to discuss having a treaty between the Three Factions and the West Kyoto Youkai Faction, though before she could do that, their leader Yasaka was kidnapped by the Hero Faction. With the aid of the Occult Research Club and Sun Wukong, Yasaka was rescued and the Hero Faction was repelled back from Kyoto. During the Demonic Beast Riot, Yasaka and her Youkai went to the Underworld to assist the Three Factions in repelling the Annihilation Maker Anti-Monsters, with Yasaka fighting a Bandersnatch by herself. After Trihexa awakened, Yasaka and her Youkai helped to defend Japan by fighting the split Trihexa body and groups of Evil Dragons that appeared at the coast of Japan. The West Youkai Faction capital of Kyoto was attacked by Erebus along with a group of artificial Devils, as Erebus attempted to get revenge on King Enma for rejecting the Alliance of Hell's invitation to join. With the help of Team DxD, the West Youkai Faction was able to repel the attack.

East Youkai Faction

The East Youkai Faction, also known as the Kanto Youkai Faction, are another group of Youkais led by Nurarihyon. The members of the faction reside in the Kanto region of Japan. Originally, they had a agreement with the Five Principal Clans that they would not interfere with each other and protect their respective territories. However, that agreement was broken in recent times and as a result, the younger Youkai of the faction came to detest the Five Principal Clans. The East Youkai Faction also received attacks from the Hero Faction, with lead to the younger Youkai of the faction to also detest Sacred Gear users as well. The faction received a peace treaty proposal from the Three Factions, as Azazel and the leader of the East Youkai Faction; Nurarihyon negotiated, as he came to Kuoh Town to observe the lifestyle of the Occult Research Club, a important group within Team DxD. After the younger Youkai of the faction were able to went their frustrations by fighting members of the Occult Research Club and Nurarihyon was humiliatingly defeated by Ophis, the East Youkai Faction singed a peace treaty with the Three Factions.

Known Youkai

West Youkai Faction members

East Youkai Faction members

Other Youkai

Former Youkai


  • Youkai roughly translates into "Bewitching Mystery".
  • Most Youkai lives inside of a bounded field similar to the one used for the Rating Game.
  • Sun Wukong, a former Youkai, is the only known being to have gained power equivalent to a God without having started out as one.
  • Yuki-onnas are actually beautiful girls when they are still young, but turn into gorillas when they mature.


  1. Light Novel Volume 24, Life 4 Part 2