César Sebastián is a cartoonist, illustrator and teacher living in Valencia (Spain). He graduated from the San Carlos Fine Art School at the Polytechnic University of Valencia. As an illustrator, he has created art for book covers, posters, story boards, advertising and text books. He is also the regular cover designer for El Nadir Gráfica, a Spanish publisher's imprint specialized in historical comics and artwork. As a cartoonist, his work has appeared in several comics and anthologies.