Grattz is a male Minotaur who stands over three meters tall, making him an imposing figure within the world of the series. He holds the prestigious position of being one of the Four Heavenly Kings and serves as the Supreme Commander of the Western Army. As the head of the Marquis of Britoa house, he is recognized as a military genius, particularly in the areas of logistics and command from a supporting position. Despite his strategic expertise, Grattz personally prefers to fight on the front lines rather than directing battles from the rear.

In terms of personal motivations, Grattz wishes to marry a character named Ronana. His approach to this goal is significantly shaped by the rules of the village where the story takes place. The protagonist, Hiraku Machio, establishes that Ronana’s own will is paramount, and Grattz is explicitly forbidden from using his power or influence to pressure her, with her express consent being the only acceptable path to marriage.

Grattz’s role in the story largely revolves around his interactions with this village. After the conditions for his courtship are clarified, he becomes a regular visitor, often attending festivals. During these visits, he is depicted as having relaxed and harmonious conversations with Ronana. His relationship with her develops further over time. Around the seventeenth year of the village’s timeline, Grattz begins a form of part-time cohabitation with Ronana in the village, commuting daily to the royal capital with the assistance of Bizel’s teleportation magic. This arrangement highlights his commitment to both his duties in the capital and his personal life in the village.