Dino is a demon mercenary defending Orthozes against invasion by the militaristic nation of Bjor. He possesses immense physical strength and an imposing, muscular build with beast-like features, earning him frequent characterization as a "killing machine." His motivation is driven by personal tragedy: his wife died during Bjor's initial invasion attempt, leaving him solely responsible for raising their young daughter, Pururu. To provide for her, he undertakes dangerous mercenary assignments, aware each mission risks orphaning Pururu. His warfare earnings directly fund her care, creating constant tension between his necessary profession and paternal duties.

Despite his fearsome reputation and gruff exterior, Dino shows deep affection and concern for Pururu, his actions consistently aimed at securing her future. This softer side manifests in playful, silly interactions with his mercenary comrades, Mara and Aide, revealing lightheartedness amidst the grim war. Underlying this camaraderie is persistent anxiety about Pururu's fate should he perish in battle.

Within the mercenary group, Dino fights alongside Mara, a former Crimson Knight disillusioned with her command, and Aide, an amnesiac wanderer bearing an uncanny resemblance to Bjor's ruthless leader, Fract. Recognizing Aide's similarity to Fract, the trio devises a plan to infiltrate the enemy camp and assassinate the generalissimo. Dino's strength and combat skills are instrumental in this high-risk operation.

His narrative arc highlights the devastating human cost of war for non-combatants and those fighting out of necessity. His personal struggle—balancing survival, providing for his child, and seeking stability—serves as a counterpoint to the grander political and military conflicts. His ultimate fate and Pururu's long-term security remain unresolved.