Sadaō Mao

King Satan Jacob, also known as Sadao Maou, is the titular main protagonist of the 2011-2020 fantasy comedy light novel series The Devil Is a Part-Timer! (as well as its 2012 manga & 2013 anime television series adaptations of the same name). He was a demon lord from Ente Isla who ends up in Tokyo, Japan on Earth and become a part timer employee later as a shift manager at MgRonald's. He tries to make a living while trying to find a way back to Enta Isla. While his role was usually that of a villain during his time in Ente Isla, he has steadily progressed into heroism since living on Earth. This is shown in such acts like saving people from being killed by an earthquake, protecting the city from either demons or renegade angels, as well as trying to save Chiho and Emi.