Mesh survived the same village massacre as the protagonist, orchestrated by Gardein. Gardein initially mistook Mesh for the prophesied Champion of Silver due to his heritage and survival, but it was later uncovered that Mesh held the title of Champion of Bronze within the prophecy.

Expanded media establishes Mesh as the protagonist's childhood friend, creating a foundation of shared history and mutual loyalty. During the climactic confrontation against the primary antagonist Varohl, Mesh fought alongside the protagonist. As foretold, the Champion of Silver awakened her power, transforming Mesh from the Champion of Bronze into the Champion of Gold, essential to achieving victory over Varohl.

The manga adaptation further develops Mesh as an honorable and highly skilled knight who accompanies the protagonist throughout her journey. His combat abilities and steadfast nature contribute to their efforts against threats, while the manga explores his role within the group dynamic, emphasizing his reliability and dedication to their mission.

The spelling of his name varies across sources and translations, appearing as Mesh, Mess, Meshu, or Mashu.