Otto is a young man with a lean build and a modest, unassuming demeanor. He has short, grayish hair that is slightly messy and green eyes that reflect his sharp intellect and earnest personality. His expressions often switch between determination, exasperation, and anxiety, reflecting his ability to adapt to situations while juggling the stress of his responsibilities.

His clothing is practical and suited to his role as a merchant and internal affairs officer. Otto is typically seen in a light-colored shirt, a waistcoat, and sturdy trousers, emphasizing his down-to-earth nature. His appearance is further complemented by a pouch or satchel, symbolizing his background as a traveling merchant.

Otto is intelligent, pragmatic, and deeply loyal to his friends and allies. Though he often appears flustered or anxious, he is highly resourceful and capable of maintaining his composure in critical situations. Otto’s sense of humor and occasional self-deprecation make him relatable and endearing, while his unwavering dedication to the Emilia Camp demonstrates his strong moral compass.

While Otto is not a warrior by nature, his quick thinking and strategic mind make him an invaluable member of the Emilia Camp. His wariness toward Roswaal and his cautious approach to danger highlight his protective instincts and his determination to shield his allies from harm. Despite the hardships he has faced, Otto remains optimistic and hardworking, embodying the spirit of perseverance.

Arc 3: Introduction: Otto is introduced as a traveling merchant who becomes entangled in Subaru’s and Emilia’s journey during the events of Arc 3. Although initially motivated by self-preservation and profit, Otto’s experiences with Subaru and Emilia reveal his compassionate and selfless nature, prompting him to join the Emilia Camp.

Arc 4: Support and Strategy: In Arc 4, Otto’s role expands significantly as he uses his merchant connections and strategic thinking to support Subaru and Emilia during their conflict with Roswaal L. Mathers and the challenges of the Sanctuary. His Divine Protection of Anima Whispering becomes a key asset, allowing him to navigate the wilderness and communicate with animals to gather intelligence and execute plans.

Arc 5 and Beyond: Political and Tactical Contributions: In Arc 5, Otto plays a crucial role in managing the Emilia Camp’s internal affairs and ensuring their success during the Great Watergate City incident. His involvement in the Royal Selection deepens as he continues to use his skills to support Emilia’s candidacy. Otto’s contributions in Arc 7 and Arc 8 showcase his adaptability and growing confidence as a key member of the camp.

• Natsuki Subaru: Otto shares a close friendship with Subaru, often acting as both a voice of reason and a supportive ally. Despite Subaru’s reckless tendencies, Otto remains loyal to him and respects his determination.

• Emilia: As a member of the Emilia Camp, Otto is deeply committed to supporting Emilia’s candidacy in the Royal Selection. He admires her kindness and works diligently to help her achieve her goals.

• Roswaal L. Mathers: Otto harbors significant distrust toward Roswaal, recognizing his manipulative tendencies. This wariness drives Otto to protect the Emilia Camp from Roswaal’s schemes.

• Ram and Garfiel Tinsel: Otto shares a complicated yet cooperative dynamic with Ram and Garfiel, often working with them despite their differing personalities and approaches.

Otto Suwen exemplifies the value of loyalty, intelligence, and perseverance. His journey from a struggling merchant to a critical member of the Emilia Camp highlights his growth as a character and his importance to the story. Through his sharp mind, unwavering dedication, and willingness to stand by his friends, Otto leaves a lasting impact on the world of Re:Zero, proving that even those without extraordinary combat abilities can play pivotal roles in shaping the outcome of events.