Black Markers are the sources of every reverse-engineered Red Markers. Black Markers are thought to arrive on planets filled with life, proving potential for sentient beings to evolve. With the case of the Black Marker found on Earth, it is thought to have arrived in the asteroid that caused the massive extinction event 65 million years ago and also the doom of the dinosaurs.
As speculated by Jacob Danik, the leader of the fanatic Unitologist group called the Circle, the Black Marker forces a spesific species to evolve into sentient beings. Few examples are the Tau Volantis aliens and humans on Earth. Once the beings are sentient enough, the Marker attempts to infulence them into creating Red Markers. In the case of the humans, they began to worship the Markers as a sign of God and began a religion called Unitology; a belief of that man has been created by aliens and in the afterlife, they will reunite during Convergence, which ironically is true, however, the truth is more disturbing.
After the time comes, the sentient beings become insane from the Marker Signal and begin to kill each other. At this stage the Markers begin to transform the dead into Necromorphs, which increance the dead and the creatures' numbers. Once there are enough of these creatures, they gather around the Markers or the source Marker that caused the outbreak in an effort to activate a Convergence Event. During this period, the Red Markers begin a chain reaction, activating Convergence everywhere the Red Markers have spread, eventually reaching the source Black Marker, which begins to float into orbit in high winds and gather the organisms around it, forming a Moon. The Moon is complete when the organisms of the planet they were in are completely annihilated by being either changed into Necromorphs or have been consumed into the Moon or both. After becoming whole, the Moon connects to its brethren and start over the cycle of rebirth by presumably choosing a planet with organisms and launching a Black Marker towards it.
- Earth Black Marker
- Tau Volantis Black Marker