Reaper

Reapers are a hostile alien species that were known to Kivalon.

History
In 150,084 CMT, Caiaphus entered Kivalon's unconscious mind to discover where Kivalon's knowledge about the multiverse came from. The mental projection of Caiaphus was transported to some kind of dream, vision, or possibly a memory in Kivalon's mind that took the form of a large city that the mental projection of Kivalon inhabited. The skies of Kivalon's city were eclipsed by black clouds and an entity who took the form of a mask, who released several hostile species from the clouds to kill the city's inhabitants. The Reapers were one of these species that participated in the following massacre.