Runners are the one of the smallest alien, on par with the Drone. They act as scouts for the Hive.
It is a comparatively weak alien and easiest to spot due to it's red coloration, which is why it prefers to rush enemies in packs.
They are an extremely fast and agile strain of aliens, perhaps one of the fastest.
It's intelligence seems to be docked, as it kills prey outright and spares no one rather than gathering prey for the hive to grow from.