Professor Yamatone, also known internationally as Dr. Steel, is a central Japanese scientist across Ogon Bat media. Renowned for exceptional intellect and inventive capabilities spanning multiple scientific disciplines, he earns a reputation as a versatile research "wizard." He rapidly deduces solutions from minimal information and creates advanced technologies like the "Super Car."

Leading a United Nations research organization in the Japanese Alps during the 1966 live-action narrative, he searches Atlantis for planetary defense materials against the rogue planet Icarus. His team, attacked by the antagonist Nazo, discovers the entombed Ogon Bat. The ancient hero's revival by a child associate establishes their recurring partnership against extraterrestrial threats.

The 1967 anime adaptation shows Yamatone as a prominent physicist representing Japan in global science. He mentors an assistant, Gabby, addressing her occasional impulsiveness, and parents his son, Terry. His scientific work involves investigating Atlantis and confronting threats from Dr. Zero's robotic and monstrous creations. He demonstrates protective instincts, notably rescuing a child named Mary from a Dr. Zero-induced shipwreck.

Personality-wise, he consistently exhibits politeness, courage, and selfless dedication. He approaches scientific and defensive missions seriously while maintaining compassionate concern for others' safety. Some narratives show occasional impulsive decision-making during high-stakes situations, contrasting his analytical nature. His professional attire varies between adaptations, from practical field wear to formal suits, reflecting contextual demands.

His background lacks explicit personal history details like birthplace or family origins beyond immediate onscreen relationships. His core characteristics and professional standing show no substantive evolution across media timelines. His narrative function centers on scientific leadership and facilitating Ogon Bat's interventions against world-threatening forces.