reaver
One who reaves; a plunderer, marauder, or pillager.
where these reavers from hell roam in their errands.
nobody knows
Where it comes from
From Middle English revere (also revour, reiver, refar, reavere), from Old English rēafere (“reaver; robber; spoiler”), equivalent to reave + -er. Cognate with Saterland Frisian Roower, Dutch rover, German Räuber, Swedish rövare, Icelandic raufari. Compare robber, rover.
Adapted from the Wiktionary entry reaver (CC BY-SA 4.0).