Erin Hunter is a pen name used by a team of British authors — primarily Victoria Holmes, Kate Cary, Cherith Baldry, and Tui Sutherland — who write the Warriors and other animal fantasy series for middle grade readers.
Erin Hunter is a pen name for a collaborative team of authors who created and continue to write the Warriors series — one of the most successful middle grade book series of all time. The primary authors behind the name have included Victoria Holmes (who developed the storylines and characters), Kate Cary, Cherith Baldry, and Tui Sutherland, with editorial direction from HarperCollins.
The team began writing under the Erin Hunter name in 2003 with the publication of Warriors: Into the Wild, the first book in what would become the original Warriors arc. The series grew to encompass six arcs of six books each plus numerous super editions, novellas, and graphic novels — over sixty books in total as of 2026, with new instalments continuing to be published.
The original Warriors arc — the essential starting point for any new reader — consists of six books following Firestar (originally Rusty, a house cat) as he joins ThunderClan and rises from apprentice to leader:
- Warriors: Into the Wild (2003)
- Warriors: Fire and Ice (2003)
- Warriors: Forest of Secrets (2003)
- Warriors: Rising Storm (2004)
- Warriors: A Dangerous Path (2004)
- Warriors: The Darkest Hour (2004)
The subsequent arcs follow new generations of cats in the same forest world:
- The New Prophecy (Books 1-6, 2005-2006)
- Power of Three (Books 1-6, 2007-2009)
- Omen of the Stars (Books 1-6, 2009-2012)
- Dawn of the Clans (Books 1-6, 2013-2015) — prequel arc
- A Vision of Shadows (Books 1-6, 2016-2018)
- The Broken Code (Books 1-6, 2019-2021)
- A Starless Clan (Books 1-6, 2022-2024)
Beyond the main arcs, the Warriors world has expanded to include graphic novel adaptations, super editions (focusing on individual characters), and a series of novellas.
The Erin Hunter pen name has also been used for related animal fantasy series including Seekers (about bears), Survivors (about dogs), and Bravelands (about African savannah animals), though none of these achieved the cultural impact of Warriors.
The Warriors series has sold over forty million copies globally, with its readership extending far beyond the intended middle grade age range — adult readers who discovered the series as children frequently return to it and introduce it to their own children. The series is experiencing a significant resurgence in 2025-2026 driven by TikTok and YouTube communities dedicated to Warriors lore, analysis, and fan creativity.