Hellboy - La bible infernale

In 2003, Delcourt released Hellboy - La bible infernale, a single-issue French-language reference book that serves as a comprehensive guide to Mike Mignola's Hellboy universe. Featuring extensive art by Mignola himself, this volume collects character designs, unpublished sketches, and behind-the-scenes notes, offering fans a deep dive into the visual and narrative foundations of the series. Though a standalone publication, it remains a key artifact for understanding the creative process behind one of comics' most distinctive dark fantasy sagas.