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The Kryll are highly aggressive bat-like creature that inhabits the outer Hollow. Appearing on the surface after Emergence Day, packs of Kryll used to stalk the Serran nights looking for prey to rip apart. Subterranean in nature and dwelling, Kryll avoid light of nearly any intensity, their eyes so sensitive that even the slightest amount of bright light brings pain. As such, Kryll only come out at night to feed above ground, returning to their underground roosts before the sun rises.
So consumed in their appetite for flesh, Kryll have been known to attack any and all living creatures foolish enough to be in too dark a place when they begin their feeding. Kryll do not hesitate to eviscerate Locust, Stranded or Gears alike while on the prowl. Anything unwise enough to be in the dark is stripped to the bone in mere seconds by hundreds of voracious Kryll. A menace to all on the surface, none were for the poorer when the Kryll were wiped out by the Lightmass Bomb, their breeding grounds destroyed.
