Mario Ponce was part of Fidel Morales Vega's team for ©Línea magazine, a publication of the comics section of the Prensa Latina agency, that ran from 1973 until 1977. Ponce drew the cover of the first issue in 1973, as well as the samurai serial 'Yuriyaku'. He was also one of the artists of 'Milo la Pinera'. Another comic by Ponce is 'La batalla naval de Tsushima' with Martha Cruz. Other members of the ©Linéa team were Vicente Sánchez, Newton Estapé, Virgilio Yordi and Carmelo González.