The protagonist Spirit Detective entrusted by Koenma to protect a mysterious artifact against an invading threat. He leads the defense of Earth alongside his friends.
Core Spirit Detective partner who fights alongside Yusuke against the Netherworld invasion.
Strategic ally and fellow Spirit Detective who coordinates attacks during the battle.
Powerful combat partner who joins the defensive line against the invading forces.
Spirit World authority who commissions Yusuke as the Spirit Detective to handle the crisis.
Former Spirit Detective who trained Yusuke and provides tactical guidance during the war.
Death God who delivers the crucial item and initiates Yusuke's involvement in the crisis.