Since his breakout success in his miniseries Seed of Destruction, Hellboy has become one of the biggest heroes in indie comics. Rather than receiving an ongoing series, Hellboy's tale has been told through a combination of crossover stories, miniseries, and one-shots. The one-shots are loved by many for telling simple, done-in-one stories about Hellboy and the BPRD's various missions that pit them against monsters, demons, and ghosts.
Source：https://www.cbr.com/hellboy-best-one-shot-comics/
