Erin Hunter is a pen name used by a group of authors who collaborate to write the popular children's book series, Warriors. The series follows the adventures of wild cats living in clans, exploring themes of friendship, loyalty, and survival. The main authors behind the name include Kate Cary, Cherith Baldry, and Victoria Holmes, who originally created the series. Since its debut in 2003, the Warriors series has expanded to include multiple sub-series, graphic novels, and a dedicated fan base, making it a significant part of children's literature.