The siren star was used by Mu-Quillus to attract and kill Leviathans according to his contract with the Patriqu-ro, a race of shipbuilders who saw Leviathans as competition and wished to destroy them. He was somehow capable of changing the frequency and consistency of the electromagnetic pulses, muffling or intensifying them as he wished. There seemed to be some kind of point in the star where the pulse were generated from, which Mu-Quillus had somehow linked himself to, as he died when Talyn destroyed this point with a blast from his cannon. ("Meltdown")