Hellboy is a fictional character created by writer and artist Mike Mignola. He first appeared in San Diego Comic-Con Comics #2 in 1993 and is known for his red skin, large horns, and a right hand made of an indestructible material called the Right Hand of Doom. Hellboy works as a paranormal investigator for the Bureau for Paranormal Research and Defense (B.P.R.D.), battling supernatural threats and creatures. The character has been featured in various comic book series, animated films, and live-action movies, including the 2004 film directed by Guillermo del Toro. Hellboy's stories often blend elements of folklore, mythology, and horror, exploring themes of destiny, identity, and the struggle between good and evil.