Malthon was born in La Oroya, Peru, in 1961, along with his entire family emigrated to Lima when he was 8 years old. Like almost any other immigrant he had to work hard to improve his status. After graduating from high school, Malthon studied Architectonic Drawing for two years at the Instituto Superior Metropolitano. Such studies made him realize that he wanted to be an artist. He then went to Escuela de Bellas Artes. He graduated from the School of Arts in 1987 with the first prize in drawing. In addition, to painting Malthon studies Photography. He has had several exhibitions including: 1987 Escuela de Bellas Artes, 1988 Galeria Sol, 1988 Galeria Del Puente, 1989 Banpeco, 1989 Sheraton Hotel, and 1990 Galeria Sol.