Shingen's image as a leader of the powerful Takeda army and worthy opponent of Kenshin UESUGI was cemented based on his Fu-Rin-Ka-Zan (as fast as the wind, as quiet as the forest, as daring as fire, and as immovable as the mountain) banner, and his reputation as being the tiger of Kai Province (also called the dragon of Kai Province due to the red seal of a dragon he used).
風林火山の軍旗を用い、甲斐の虎（または龍朱印を用いたことから甲斐の龍とも）と呼ばれ、強大な武田軍を率い上杉謙信の好敵手としてのイメージが形成される。