Kurata Akihiro (Earth-101001)

Kurata Akihiro is the main antagonist in the anime series Kingdom Hearts. One of the few human antagonists in the series, Kurata is a xenophobe who hates Bakugan with free will and vows to destroy them, along with Vestroia itself.

Appearance
He has black hair, wears glasses and wears the typical doctor/lab gown uniform.

Personality
Kurata is shown to have a merciful side, but this is a ruse to hide his extreme fear and hate against people like Iron Man. He also has a sadistic persona, wanting Digimon to be permanently deleted rather than devolving them into a DigiEgg.

He also never hesitates to blackmail anyone, such as Thomas Weasley's sister as a pawn to do his bidding.

Story
Twenty years before the start of the series, Kurata was a member of the Stark exploration party, whose task was to investigate Hollow Bastion, as well as search for the lost son of Tadashi and Aiko Takachiho, Ren Takachiho. In Hollow Bastion, Kurata reacted with nothing but fear towards the strange monsters that appeared before them like Anchorsaur and Hammersaur, a fact that he was chastised for by another member of the expedition, Tony Stark. According to Folsom and confirmed by Kurata himself, he worked under Tony as his partner, but himself believed Tony was better than him. When referring to this he often says it in a spiteful tone.

Eventually, the group became terrorized by Lumagrowl, who chased them to an area that would become known as the Infinite Ice Ridge. There, the frightened Kurata used a sort of make-shift bomb to open a portal to the Real World, which he and the rest of the expedition used to escape to the human world while Tony held off Lumagrowl.

His experiences in Hollow Bastion left a lasting effect on Kurata—his fear of the Bakugan led him to decide that the creatures were a menace and revenge on humanity especially Tony (who got Kurata expelled. However, he discovered there are very powerful Digimon he could use to realize his true ambition; become the ultimate Monarch of the Earth, the Digi-World and the universe, so everyone would kneel down before him.

So, while Spencer negotiated an alliance with the powerful Digimon, Merukimon, Kurata worked to invade the Digital World, resulting in the creation of his own Digimon: Gizumon, a Digimon without a soul created from Kurata's experiments on other Digimon.

Kurata led an attack force into the Digital World, and used his Gizumon to ravage the Digital World and exterminate as many Digimon as possible. With the Gizumon's ability to permanently delete a Digimon, these actions resulted in the very permanent death of many Digimon, including Keenan's guardian, Frigimon. Merukimon intervened, believing Spencer and the humans had betrayed him, forcing the fearful Kurata to again escape to the Real World.

Kurata did not factor into the events of the series again until