Maroro acts as Ukon's scribe, scholar, and magician. Initially comical and frail, he cowers before stronger foes or frightening monsters. Yet he shows fierce loyalty, protecting friends in trouble, especially Haku. He considers Haku his best friend and benefactor after being rescued from a Gigiri attack, an event solidifying their bond. Maroro frequently expresses devotion to Haku, who remains reluctant to acknowledge their "best buddy" status. His magic demands lengthy chants and matching dances but achieves wide-area effects, primarily fire-based. A comical rivalry exists between Maroro and Rulutieh's giant pet bird as both compete for Haku's attention. During Yamato's civil war, Maroro witnesses the Ennakamuy massacre and believes Haku died. This devastation breaks him emotionally, making him vulnerable. Raiko exploits this weakness, capturing Maroro and implanting a parasite. The parasite enhances his magical power while implanting false memories of Oshtor killing Haku. Brainwashed and weaponized, Maroro becomes a recurring antagonist, using his unrestrained magic to repeatedly corner Oshtor (Haku impersonating the deceased general) in battle. After Oshtor reclaims the capital, Maroro overcomes the false memories and ejects the parasite. Distraught, he apologizes, only to learn Oshtor's true identity is Haku—revealing his best friend survived. Simultaneously, Maroro intercepts Shichirya's blade meant for Oshtor, sustaining fatal injuries. He dies in Oshtor's arms, content knowing Haku lives, and takes the secret of Haku's identity to his grave. Following his death, Maroro appears spiritually alongside Oshtor when Haku accepts the role of Onkami to save Kuon. In the mobile game *Lost Flag*, an alternate-timeline version appears as a supporting character. One storyline depicts him married with a child; he temporarily reverts to anxious speech patterns upon his daughter's birth before adopting a calmer demeanor.