He started his sequential art career writing and drawing erotic comics. Years later, he shifted to working in the American comics market, pencilling and inking IDW's Transformers—yes, from erotic to robots. Fun! After accumulating more work at new publishers including DC Comics, Rojo pencilled, inked, and colored Top Cow’s IXth Generation. The artist has continued working at Top Cow, including Eden’s Fall, Samaritan, and Cyber Force.