Matthew Tetdrich is a supporting character in the military fantasy series Alderamin on the Sky. He comes from a minor noble family and enlists in the Katjvarna Empire's army with the goal of restoring his family's waning prestige. Physically, he is described as plump with freckles or pimples on his cheeks. His personality is initially marked by insecurity and a tendency to panic, placing him in the role of the everyman among the main group of officer candidates. He holds a strong ambition to succeed in the military but finds himself consistently outperformed by prodigies such as Ikta Solork, Yatorishino Igsem, and Torway Remion. Despite feeling inadequate, he is deeply dedicated and works hard to improve. His role in the story is that of an infantry officer who manages frontline soldiers and maintains morale during campaigns. Under Ikta's influence, he learns to apply practical tactics and develops into a capable commander. He often collaborates closely with Torway during tactical maneuvers. Key relationships include a competitive but friendly rivalry with Torway and Haroma Bekkel, and a deep respect for Ikta, even as he is frequently annoyed by Ikta's lazy personality. Later in the series, he enters a romantic relationship with a fellow soldier named Polmi, who recognizes his true value and provides the emotional support he needs; they eventually marry and start a family. Matthew's character growth centers on overcoming his inferiority complex. Through persistent effort and the practical application of the lessons he learns from Ikta, he proves his worth not through innate genius but through hard work and reliability. His notable abilities include effective management of infantry units, maintaining troop morale, and carrying out delegated tactical responsibilities with increasing confidence. He holds the rank of warrant officer. His journey from an insecure noble to a steadfast, reliable officer forms a significant part of his arc.