Reger's friend Nathan Carrico designed Emily in 1991 for a skateboard company in Santa Cruz, where Cosmic Debris was born. In his Santa Cruz garage (and later an artist warehouse in San Francisco) Reger created the designs, and with Matt Reed brought them into the fashion world by creating t-shirt designs that captured the essence of this mysterious young girl with 4 black cats. Since then, Cosmic Debris has grown into a multi-million dollar firm with dozens of employees. Cosmic Debris has most recently moved its operations to Berkeley, California, and plans to open an Emily retail store there soon. With the momentum of mainstream success, several comics about Emily have also been made. Key creative people over the years (designers, graphic artists, illustrators), who have worked with Reger's Cosmic Debris design house are Buzz Parker, Brian Brooks, Grace Fontaine, Liz Baca, Noel Tolentino, Fawn Gehweiler, Jessica Gruner, Adele Pedersen and Nicomi "Nix" Turner. Rob Reger remains the key creative force behind the brand, and Buzz Parker is the key illustrator for the comic books and website.

Stan Sakai (Japanese: 坂井 スタンSakai Sutan; born May 25, 1953) is an artist who became known as an Eisner Award-winning comic book originator. Born in Kyoto, Sakai grew up in Hawaii and studied fine arts at the University of Hawaii. He later attended the Art Center College of Design in Pasadena, California. He and his wife, Sharon, presently reside and work in Pasadena. He began his career by lettering comic books (notably Groo the Wanderer by Sergio Aragonés and Mark Evanier) and became famous with the production of Usagi Yojimbo, the epic saga of Miyamoto Usagi, a samurai rabbit living in late-sixteenth and early-seventeenth-century Japan. First published in 1984, the comic continues to this day, with Sakai as the lone author and nearly-sole artist (Tom Luth serves as the main colorist on the series, and Sergio Aragonés has made two small contributions to the series: the story "Broken Ritual" is based on an idea by Aragonés, and he served as a guest inker for the black and white version of the story "Return to Adachi Plain" that is featured in the Volume 11 trade paper-back edition of Usagi Yojimbo). He also made a futuristic spin-off series Space Usagi. His favorite movie is Satomi Hakkenden (1959).