There have been reports of unidentified objects passing through or appearing in the Echo Cluster. The Galactic Council has no knowledge as to the nature of these objects or control over their behavior. They seem to be coming from outside the Nuniverse.
They may be one of the following:
Editor's Note: We were under the impression that these were mythical, but a characteristically enigmatic utterance from the Leader of the Galactic Senate indicated otherwise. Therefore, we sought enlightenment in the Old Scrolls for information regarding them -- and were completely unsuccessful. They are said to be represented on the Starmap as a "crossed box".