thumb|400px|right|"Hi, My Name is Hellboy...", an ad by Mike Mignola. Hellboy, Abe Sapien, Witchfinder, Lobster Johnson, and the B.P.R.D. are comic book creations by Mike Mignola and are usually published by Dark Horse Comics. They have been featured in numerous mini-series, one-shots, back-up features, cross-overs, and guest appearances.