Rob Vollmar has been writing comics and about comics for more than two decades. He has also worked as a professional musician and a lecturer on popular music. He is the book review and online editor for World Literature Today magazine and makes his home in Norman, Oklahoma.

Born in Leon, Spain, 1967, Pablo Callejo can't remember when he started to draw or when he first felt the need to tell stories through pictures, but he took his time, since he didn't try to get published until he was 32. After years of living in Madrid, he moved to Luxembourg where he lives with his wife and works for publishers in France, Spain, South Korea, and the US.