Hikone Ubuginu

is an artificial hybrid Soul in service to the Tsuyanashiro Family.

Appearance
Hikone is a dark-skinned, androgynous young child with red eyes and short dark hair. Hikone usually wears a red, shoulderless Shihakushō and is barefoot. They carry their Zanpakutō on their back, secured in place by a lenght of chain.

Personality
Hikone is a very polite, childlike individual with an upbeat attitude. They are very obedient and loyal to Tokinada and Aura, frequently following every given order very monotonously. Due to their artificial creation, Hikone sees Tokinada as their master and someone very close to a father, as the same is said for Aura, which Hikone sees her as their own "mother".

History
At some point before the Wandenreich invasion of Soul Society, Tokinada Tsunayashiro had commissioned Seinosuke Yamada and Aura Michibane to create an artificial hybrid Soul. Despite Aura and Seinosuke's best efforts, and the inclusion of thousands of soul pieces, including Shinigami, Quincy, Humans, Fullbringers, and even some belonging to the Soul King, Hikone was barely alive and could not move or speak. It was only when Tokinada managed to acquire the brain of the Quincy Gremmy Thoumeaux to serve as the hybrid's core that Hikone could finally be perfected and stabilized.

Natural Abilities
Immense Spiritual Power: As an artificial Hybrid meant to mimic what Ichigo Kurosaki was naturally, Hikone possesses an immense amount of Reiatsu. Hikone was able to fight on even footing with the Espada Grimmjow Jaegerjaquez, Tier Harribel, and Nelliel Tu Odelschwanck, alongside the Sternritter Liltotto Lamperd and Giselle Gewelle, though Hikone eventually lost. Harribel even compared Hikone's Reiatsu to the Shinigami captain Tōshirō Hitsugaya, who possesses large amounts of Reiatsu himself. Due to Hikone's nature as a hybrid, their Reiatsu feels similar to that of a Visored or Ichigo. Both Meninas McAllon and Candice Catnipp agree that Hikone's Reiatsu reminds them of Gremmy.

Shinigami Powers & Abilities
Swordsman:

Hakuda Practicioner:

Shunpo Practicioner: A Shinigami ability that allows for short bursts of great speed. Hikone can combine it with Sonído, Hirenkyaku, and the Fullbringers' high-speed movement technique to maximize their speed and efficiency.

Hollow Powers & Abilities
Sonído Practicioner: A Hollow ability that allows for short bursts of great speed. Hikone can combine it with Shunpo, Hirenkyaku, and the Fullbringers' high-speed movement technique to maximize their speed and efficiency.

Hierro: A Hollow ability that allows one to harden their skin. Hikone can combine it with Blut Vene or Blut Arterie to maximize their defensive or offensive abilities respectively.

Cero: A Hollow ability that allows one to fire a beam of spiritual energy. Hikone's Cero is powerful enough that the Sternritter Liltotto Lamperd believed a direct hit could vaporize her. Hikone can combine a Cero with a Heilig Pfeil for increased power.
 * Gran Rey Cero: Hikone can fire a Gran Rey Cero with enough power to injure a combatant as powerful as Nelliel Tu Odelschwanck, even after the Arrancar used her Cero Doble to counter it and was assisted by the Sternritter Liltotto Lamperd.

Quincy Powers & Abilities
Blut: A Quincy ability which gives one inhuman defensive & offensive capability.
 * Blut Vene: Hikone can use Blut Vene to increase their defensive capabilities as well as stop wounds from bleeding out. Hikone can combine Blut Vene with Hierro to maximize their defenses to the point that they can withstand strikes from Kenpachi Zaraki.
 * Blut Arterie: Hikone can use Blut Arterie in combination with Hierro to preform Hakuda strikes powerful enough to injure Kenpachi Zaraki.

Hirenkyaku Practitioner: A Quincy ability that allows for short bursts of great speed. Hikone can combine it with Shunpo, Sonído, and the Fullbringers' high-speed movement technique to maximize their speed and efficiency.

Fullbring Powers & Abilities
High-Speed Movement: Hikone has demonstrated the ability to use this Bringer Light-generating power in combination with Sonído, Shunpo, and Hirenkyaku to move at speeds fast enough to take even Kenpachi Zaraki off-guard.

Zanpakutō

 * In its sealed state, Ikomikidomoe is pure white, almost glowing, broadsword with black spots on it. The sword has a long handle, and combined with the blade is almost the size of Hikone. Due to being a special, inherited Zanpakutō forged by Ōetsu Nimaiya, Ikomikidomoe can only be wielded by hybrid creatures such as Hikone or Ichigo Kurosaki. Like all Zanpakutō, Ikomikidomoe has its own personality, though unusually it is able to project its voice for others to hear.


 * Descorrer: Ikomikidomoe can freely open Garganta for its wielder to travel through. The Zanpakutō can do this either on command, or when it feels its wielder's life is in danger.


 * Cero Negation: Ikomikidomoe is able to nullify any Cero fired at its wielder.


 * Shikai: Unlike most Zanpakutō, Ikomikidomoe has several Shikai commands, each producing a unique effect.
 * Shikai Special Ability: Ikomikidomoe has numerous Hollow related abilities, each differing depending on which release command is used.
 * Orbit the stars, Ikomikidomoe!: Ikomikidomoe transforms into a massive Hollow arm that can attack on its own.


 * Send them to their burials, and engrave them in memory, Ikomikidomoe!: Ikomikidomoe transforms into a gargantuan Hollow noted to be around the size of the Espada Yammy Llargo's Resurrección or the Gillian spouting Hooleer, while simultaneously possessing the same Reiatsu density of a Vasto Lorde. In this form, Ikomikidomoe can act somewhat independently, though is ultimately still under Hikone's control. If necessary, Ikomikidomoe can instantly return to its sword form.


 * Enhanced Roar: In this form, the mere roars of Ikomikidomoe can shake and devastate a part of the Rukongai.


 * Hollow Spawning: In this form, Ikomikidomoe can spawn numerous flying Hollows to overwhelm opponents.


 * Hatch the deceased, Ikomikidomoe!: Ikomikidomoe transforms into a large, humanoid Hollow, smaller than the sword's previous release. While this form resembles an Adjuchas, its power is greater than most Vasto Lorde.


 * Reiatsu Blast: In this form, Ikomikidomoe can release a massive blast of Reiatsu, strong enough to greatly injure three Espada.


 * Resurrección: : As Hikone says, Ikomikidomoe does not possess a true Bankai, and its second release is more akin to an Arrancar's Resurrección. In this form, Ikomikidomoe itself transforms into a pure white Katana, while Hikone's Shihakushō turns black as their appearance becomes more like a Hollow.


 * Resurrección Special Ability: Hikone's Resurrección vastly enhances their natural abilities.
 * Enhanced Spiritual Power: In their Resurrección, Hikone's Reiatsu skyrockets and becomes transcendent like Sōsuke Aizen did upon fusing with the Hōgyoku. This godly spiritual power is what truly makes Hikone suited to become a new Soul King.

Appearances in Other Media
As part of the celebration for the collaboration with the Can't Fear You're Own World novel, Hikone was added to Bleach: Brave Souls as a playable character. Hikone is voiced by Ayumu Murase. Hikone's special has Hikone use its Shikai command "Mark the Funeral - Ikomikidomoe", where Hikone summons the giant Hollow within the sword and rides on its head as it unleashes several massive tornadoes by roaring, which deals massive damage to enemies.