"Bloodlines" is a 1993 comic book story arc published by DC Comics. It was an intracompany crossover that ran through DC's superhero annuals and concluded with a two-issue Bloodbath miniseries written by Dan Raspler. The antagonists were a race of monstrous dragon-like aliens who killed humans for their spinal fluid. A small fraction of the parasite's victims survived and become super-heroes via their ordeal. This plot device introduced a wave of "New Blood" superheroes into the DC Universe. Seven DC Comics series were spun out of the event: Blood Pack, Razorsharp and the Psyba-Rats, Hitman, Anima, Loose Cannon, Argus and Gunfire.
Publication history
The villains of the crossover were the formerly imprisoned survivors of a race of alien parasites named Angon, Gemir, Glonth, Lissik, Pritor, Venev, and Slodd that could shapeshift into humanoid forms. They commonly kill others by feeding on their spinal fluid, which can awaken superhuman powers in the recipient.[1]
Each of the annuals involved in the crossover used this plot device to introduce a new super-powered character to the DC Universe.