Lazarus, a dragon-like humanoid Dragonute, serves as the dedicated guardian of the priestess at Etwarl Temple, a role destined for him since hatching. He operates as a Heavy Knight within the Weissritter faction, specializing in combat and defense. His background involves training and service tied directly to the temple.

Within the *Shining Tears X Wind* anime storyline, Lazarus functions as part of Weissritter, supporting protagonist Souma Akizuki's efforts to mediate conflicts in End Earth. During critical battles, Souma draws upon Lazarus's power to manifest the "Jade Sword" as a Soul Blade, demonstrating their cooperative dynamic and Lazarus's combat capabilities.

Remaining committed to his guardian role beyond the main conflict, Lazarus chooses to stay in End Earth following the resolution of the Holy Grail war and the return of several human characters to their original world. His continued presence aligns with his ongoing duties to the temple and the Weissritter faction.