Ann Margaret Lewis is the real-life author of The Essential Guide to Alien Species. Ann began her career writing children's stories, comics stories, and activity books for DC Comics after serving on their editorial staff for three years. She has contributed to several media magazines, books, and Web sites. She is also a trained coloratura soprano, a wife of husband Joseph, and a mother their little boy Raymond.

When Ann wrote the first edition of the The Essential Guide to Alien Species, her friend, Star Wars writer Rich Handley, generously assisted her with research and brainstorming. When the second edition came along, she was a frantic new mother, so she enlisted the aid of her friend, the very knowledgeable Helen Keier, to co-author the updated version.

Another person with the same name also lived in the Star Wars universe. The in-universe one received her data from the Senior Anthropologist Mammon Hoole.