On Philos, where emotion and desire are criminalised, Sylus rejects the planet's entire moral framework. He is catalogued under codename SYLUS HDS-7213 and becomes the most dangerous interstellar fugitive in Philosian history. The defining act is his escape from the Supreme Interstellar Starship Tartarus — Philos's space-time prison — which no one else has ever accomplished. He abandons Philos to 'embrace Earth and the act of living.' The Astral Enforcers of Philos, including Myer, dedicate entire careers to recapturing him and fail.