MassEffect 2008-08-13 11-16-12-75
Among the Reapers, their largest members are known as capital ships by the galaxy at large. Their appearance seems to resemble that of a giant cuttlefish, with large oval-shelled bodies and numerous tentacles/feelers at their fronts. These vessels are completely sentient and highly intelligent, privy to all manner of ancient knowledge and secrets. Their destructive power is unparalleled, capable of laying waste to cities in minutes with their magnetohydrodynamic launchers, particle cannons and mass-effect rail guns. Their very presence can cause organics to fall sway to their insidious indoctrination, reducing people to mindless slaves or willing covert operatives.

Both Harbinger and Sovereign are capital ships.