Skip navigation Hellboy Universe: The Secret Histories Volume 1 TPB Three stories of instrumental side characters are explored in full, collected for the first time in a handsome hardcover perfect for any Hellboy fan's library. When did Rasputin find his calling to bring about Ragna Rok?  How did the Visitor stay hidden on Earth for so long? And where did the legendary Sledgehammer armor really come from? These questions and more are answered in this new collection from the world of   Hellboy ! Three stories of instrumental side characters are explored in full, collected for the first time in a trade paperback perfect for any Hellboy fan's library. Hellboy   creator Mike Mignola is joined by John Arcudi, Chris Roberson, Laurence Campbell, Christopher Mitten, Dave Stewart, and others to bring these hidden corners of the Mignolaverse to light. Collects   Rasputin: The Voice of the Dragon, Sledgehammer 44,   and   The Visitor: How and Why He Stayed .…