Julian Voloj was born in Muenster, Germany, to Colombian parents. There, he studied literature and linguistics. He is the author of a number of internationally successful graphic novels including "The Artist Behind Superman: The Joe Shuster Story", "Basquiat", "Black and White" and "(Not) A New York Love Story". He lives in New York City.

Jörg Hartmann studied illustration at the Münster School of Design where he discovered his passion for drawing, especially for comic projects. In Germany, his comics "Nostradamus" (EHAPA), "Wilsberg - In alter Freundschaft"and "Wilsberg - Um Kopf und Kragen" (Carlsen Comics) were published. He loves watercolor painting and runs his own gallery in his hometown of Münster.