Roberto Materazzi  

, ロベルト・マテラッツィ

In Episode 6 - Galileo Tesoro, it is stated that Roberto is a cruel individual who prioritizes his own goals over others' lives. He comes from a wealthy family and grew up in a grand mansion with parents who were kind people like him. On his birthday, they held a feast for the three of them to celebrate. During this time, Roberto noticed that there were hungry outsiders nearby, so he brought food to them as well. Unfortunately, their home was bombed one day and only Roberto survived. This event caused a significant change in his personality, leading him to become more selfish and less caring towards others. He was later adopted by the CEO of Adonimoon Company after being found in a poor hospital.