Brother Upton is the corrupt supreme leader of The Brotherhood and an antagonist of the series known as Legend Quest: Masters of Myth. He was trying to awaken Coyolxauhqui, the Goddess of the Moon ever since he heard her speak to him saying "Serve Me". He tried to get others to join his purpose in freeing the goddess, but they laughed at him saying Coyolxauhqui is not a goddess but a "monster". He was using Team Legend and Marcella's team in serving him as monster hunters capturing monsters as they are unaware of his plans since he only shares them with his elite henchmen "Brother" Grace and Brother MaGuffin.
After the awakening of the Moon Goddess, he became her herald until his death in trying to prevent Leo from killing his "Queen".