High summoner

In the world of Spira in Final Fantasy X, a High Summoner is a summoner that completes their pilgrimage to defeat Sin and bring the Calm, sacrificing their lives in the process. Only six known characters have and will ever achieve the title of High Summoner: Yunalesca, Gandof, Ohalland, Yocun, Braska, and Yuna. Yuna, in her pilgrimage, was able to defeat Sin forever, eliminating the need for summoners and High Summoners.