Len is the Lion man, Half Human and the Mutant of mankind. He was once the ruler of the Monarch Grasslands, a tyrant until he was captured by the sayers Pierre and Dalton with the help of the girl. Since years of solitary confinement, his mood has lightened , his anger softened and he has occasionally helped Pierre and Dalton. He sometimes has angry mood swings when the Girl is mentioned. He has the head of a Lion and the body of a man.