Hellboy is a fictional character created by Mike Mignola and published in Dark Horse Comics. The character debuted in San Diego Comic-Con Comics #2 in 1993 and since then has been featured in several works of fiction such as video games, movies, and animated series. Hellboy is based on the concept of a demon but is generally good-natured enough to join the Bureau for Paranormal Research and Defense, a special organization dedicated to the containment of paranormal phenomena.