The first Toro made his debut in Timely Comics' "Human Torch Comics" #2 (premiering fall 1940 with no cover date and as issue #2, having taken over the numbering from the single-issue "Red Raven"). Toro appeared in numerous comics titles in the 1940s, both during World War II and the post-war era. He starred with Bucky in "Young Allies Comics", and made appearances in various issues of "Kid Comics", "Amazing Comics", "Complete Comics", "Mystic Comics", "All-Winners Comics", and "Sub-Mariner Comics". In 1948, however, the Human Torch dropped Toro as a sidekick, picking up with Sun Girl instead.