D. J. Steinberg is the bestselling author of the popular Here I Come! series, with over twenty books for young readers published to date. He lives in Los Angeles, California, and can be found at djsteinberg.com. Leire Martín was born in San Sebastián, Spain, and has a bachelor's degree in fine arts and a master's degree in CGI. She worked as a 3D artist for three years, but drawing has always been her passion, so she decided to leave it all and become a professional illustrator. She usually draws digitally but she loves traditional art, too.