His past work include the Battle Girlz series, a manga novel adaptation of Alice in Wonderland,[4][5]The Alamo, Dinowars and Metadocs. He has also written and conceptualized popular Antarctic Press titles such as I Hunt Monsters and Herc and Thor.
Humanitarian work
In 2008, Espinosa won an international contest sponsored by the United Nations and the World Health Organization entitled Stop Tuberculosis. The Stop TB comic book educating people about how to avoid Tuberculosis featured soccer star Luís Figo as the spokesman.[6][7]
In 2009, Espinosa joined 60 other Filipino artists from all over the world and contributed to the tribute book Renaissance: Ang Muling Pagsilang, the sales of which were donated to the victims of typhoon Ondoy.