Comics artist Jok is member of the independent comics label La Productora. He has cooperated on, founded, scripted and drawn for El Asilo, Cabezas de Tatú Carreta, Hacha, La Metáfora, La Fiera, Mitofauno, Cedric, Camulus, Crazy Jack, Tu Sam and the economical supplement of the daily Página 12. For La Productora, he has worked on 'Perfecto', 'Ecos y Tinieblas', 'Decadencia', 'Carne Argentina', and 'Astillas del Palo'. As a scriptwriter, he works with artists like Gervasio, Aón and Dante Ginevra ('¿Quién es Copérnico?', 'Perfecto').