Reapers are among the most intelligent breed of Spectres.
They are brutal, cunning, and have several powers to put to use against their enemies. Reapers tend to head Spectral hives, dispensing orders to less powerful breeds. They resemble the classic appearance of the Grim Reaper, complete with cloak and scythe; some also have rattling chains they can use like tentacles. With the exception of Clement Wallace, Reapers have never been human in origin.
Orpheus Core, pg. 271-272