Rudeus Greyrat is the main character of the light novel and anime series Mushoku Tensei: Isekai Ittara Honki Dasu. He is a young boy who is reincarnated in a fantasy world after dying in his previous life. Rudeus retains the memories and experiences from his past, which helps him navigate his new life with a unique perspective. In his new world, Rudeus possesses exceptional magical talent and quickly becomes skilled in various forms of magic. He is determined to live a fulfilling life, overcoming his past regrets and striving to build meaningful relationships with others, including his family and friends like Sylphiette and Roxy Migurdia.