Phoebus Sovereigns are enemies in Xenoblade Chronicles 2. They are members of the Sovereign family, and can be found at level 52 - 60 throughout the World Tree, particularly through the Lower Level. They can also be found in the Mizar Thoroughfare in the Mid Level. Five must be defeated in order to unlock Perceval and Vale's level 3 "Dark Mastery", and Vale's level 5 "Violence Machine".

Five must be defeated to unlock Mikhail's level 2 "Final Crow" on his Affinity Chart.