Firefight: Nightstalker Nihiltas Void Ray

Despite their size, these graceful airborne beings are often part of the early waves of a Nightstalker incursion. Their bodies somehow maintain a connection to the Void, allowing them to disgorge Nightstalkers directly from that warped place onto the battlefield. Their plaintive voices can be heard for miles, infecting those who hear it with visions and paranoia of the horrors to come.