Tony de Zuniga's entry into the highly competitive field of comic book illustrators paved the way for other Filipino illustrators to penetrate the international market. He co-created the western comic character Jonah Hex for DC comics in the 1960's.
In the 1970's de Zuniga became an illustrator for the comic industry leader Marvel and dipped his artistry in the X-Men and Spider-man series.
His last notable work was for DC comics in the graphic novel Jonah Hex: No Way Back which was done to coincide with the release of the Jonah Hex movie starring Josh Brollin and Megan Fox.
Tony de Zuniga passed away in May 11, 2012. He was 71.