|Manga||241. City of Gluttons|
|Manga||Gantz Vol. 22|
He is possibly part of Team Osaka.
He is of medium height with short black hair.
Like most of the Osaka team, Imakawa is reckless and arrogant. Like the rest of the Osaka team, he takes drugs before and during the battle.
At some point in his life, he was killed and Gantz brought him back.
Imakawa is seen in the Nurarihyon Alien Mission with another hunter protecting Kazuo while he raped an alien on a pole. Then in an alley, Kazuo picks up another alien, and Imakawa and his friend send the people who were leaving. He asks Kazuo if it will be delayed, the same answer that is already ending. Suddenly appears an alien with bird's head, of which he mocks and of nothing he loses an arm, tries to run more is cut in the middle.