Hanson is a key supporting character from the 1990 anime series. He is a 27-year-old man from Nice, France, born on September 30, 1862. His primary role is as the mechanic and engineer of the Grandis Gang, a trio of jewel thieves led by Grandis Granva. Within this group, Hanson serves as the technical expert, responsible for designing, building, and maintaining their various vehicles and gadgets, most notably a small, multi-purpose tank-like machine called the Gratan. In terms of personality, Hanson is defined by his intellectual curiosity and his passion for science and mechanics. He is generally calm and focused when it comes to technical matters, showing great patience and a methodical approach to problem-solving. He shares a close friendship with the young protagonist Jean, as both are deeply fascinated by technology and invention. They frequently collaborate, with Hanson acting as a mentor figure who helps the younger boy with complex calculations and engineering challenges. His relationship with his fellow gang members is one of long-standing loyalty, having stayed with Grandis even after her family's fortunes declined, and he works alongside the strongman Sanson as her devoted associate. A recurring personal trait is his unrequited romantic feelings for Electra, a crew member of the submarine Nautilus, though his affection is never returned. Motivated by a genuine enthusiasm for advanced technology, Hanson is not driven by malice but rather by a desire to understand and create. His role in the story evolves from that of a minor antagonist pursuing Nadia's jewel to a valuable ally of Captain Nemo and the Nautilus crew, using his technical skills to help in the fight against the Neo-Atlanteans. His notable abilities include exceptional mechanical skills, allowing him to build complex vehicles and devices that are often ahead of their time, as well as a sharp analytical mind that he uses to assess and repair machinery. In the epilogue, set several years after the main events, Hanson has become a wealthy and respected industrial giant, having made his fortune as a manufacturer of automobiles, though he remains unmarried.