The fastest form of Æther fauna yet recorded. This delta wing shaped creature travels the vastness between planets and hunts the micro fauna in the upper atmospheres of planets. Named for the naturalist who first recorded their existance Carl Roentgen, they have been observed traveling at relativistic speeds. They seem to surf on a trail of blue lightening which is suspected to be a sub-spatial rift which the creatures create by unknown means. They have never been known to attack ships or outposts.