Roger Smith is the main protagonist of the anime series 'The Big O.' As a Negotiator in Paradigm City, Roger solves disputes and uncovers mysteries in a city suffering from amnesia about its past. He is charismatic, calm, and highly skilled, piloting the giant robot known as Big O. Roger’s role involves investigating strange occurrences and protecting the city's inhabitants, often confronting powerful adversaries and delving into the city’s hidden secrets.