For the first time in nearly 30 years,there is now a definitive timeline of Mike Mignola's Hellboy comedian book mythos.
The chronology has gotten a little complicated over the years after so many legend arcs and spinoffs, prompting fans to piece things together for themselves. As a result, and there are conflicting reading orders and interpretations of how one should approach the somewhat daunting "Mignola-verse."
Source: blastr.com