Sergio López was born in the city of Santiago, and has worked anonymously on several comics magazines. He began his career in the late 1960's by contributing to NAT, in which he drew 'El soldado Bototo', as well as cartoons and illustrations. He subsequently worked as a cartoonist and caricaturist for El Musiquero. For the big Chilean comics publisher Zig Zag/Quimantú, he contributed to El Capitán Júpiter, El Jinete Fantasma, El Intocable and Dr. Mortis. During the early 1970's, he drew for Percy's magazine Pepe Antártico.
After the coup in 1973, López went to work for other countries. By 1978, he was working in Uruguay, contributing to the infantile magazine Patatín y Patatán with comics like 'Andresito del planeta Aries' and the pirate series 'Pit', scripted by William Gezzio. He also worked for several publishers in Brazil. López returned to Chile in the 1990's, and created 'Pepe y Lucho' in the sports magazine Minuto 90. He now lives and works in Villa Alemana, where he draws series like 'Sub Quince' and 'Plum y Feros' for the local newspaper Futuro.