The Blight are a fictional race in the DC Comics universe. They are techno-organic beings from the 30th Century whose bodies are composed of rotting flesh and technology. They started off searching galaxies in quest of immortality. Along the way they met a powerful race, known as the Doda, with the ability to teleport across galaxies.
In the "Legion of the Damned" story arc, the Legion of Super-Heroes comes across the Doda and the Blight, and destroys the Blights' teleportation device. Without this device, which uses stargate technology, the Blight are unable to teleport or spread their putrefaction across galaxies.