Magma hails from Ishigami Village as one of its most powerful warriors. He possesses a large, muscular frame, slicked-back blond hair extending to his shoulders, thick pointed eyebrows, a prominent chin, and a strong jawline. His usual attire consists of a dark blue short-sleeved tunic, dark pants tied at the ankles, and leather bracelets, supplemented by a fur-trimmed coat in winter. Driven by extreme ambition to become village chief, Magma initially displays a willingness to kill, attempting to murder Gen due to paranoia toward outsiders and a superiority complex. He exhibits impulsivity and a tendency to advocate violence as the first solution, suggesting destroying petrified statues to weaken enemies or charging into fights without strategy. Sadistic tendencies surface, like taunting Ruri while attacking Chrome. Magma undergoes change, finding himself unable to kill Senku or Chrome when opportunities arise and even saving them during a cave collapse. He attributes this shift to finding Senku's inventions intriguing, pledging not to harm Senku so long as innovation continues. He gradually acknowledges non-physical strengths, expressing admiration for Taiju's stamina, Kinro's combat skill, and Gen's cunning, even asking Gen to become his subordinate. He wields exceptional physical strength and endurance, though surpassed by fighters like Tsukasa or Kohaku. His primary weapon is a single-headed axe, and he briefly uses a katana provided by Senku. Surprisingly, he demonstrates mathematical aptitude, solving problems correctly during the Mathlympics. His official stats rate his power at the top tier, while his speed, technique, and reach are moderate. During the Ryusui storyline, Magma participates in the Kingdom of Science's ship design contest, constructing a traditional boat reflecting Ishigami Village's practical knowledge. Though overshadowed by Senku's advanced plans, his involvement highlights integration into the group's collaborative efforts, including resource gathering and contributions to projects like oil exploration. Magma lacks connections to the pre-petrification world. His development centers on shifting from a rivalrous villager to a grudgingly cooperative member of the Kingdom of Science, valuing innovation over brute force dominance.