Many Overlord Class DropShips left the Inner Sphere during the Exodus. Later, when Nicholas Kerensky created the Clans during the years of the Exodus Civil Wars, he ordered the modification of his Overlord Class vessels so that each could carry a Cluster of 45 OmniMechs, per his Clan organization scheme.
         This refit required considerable modification of the Overlord's interior. Clan technicians removed the fighter decks on most vessels to make room for 'Mech cubicles and new crew quarters. These early craft followed no standard design, and each of the twenty vessels differed in some way. Mass production of the standardized Overlord-Cs on Strana Mechty did not begin until after the liberation of the Pentagon worlds.
         The Overlord-C is a true redesign of the original Overlord and can carry 45 'Mechs. The Overlord-C is considerably better armed and armored than its precursor but lacks an integral fighter complement. Outwardly, the Overlord-C bears a striking resemblance to its progenitor, despite being almost 2,000 tons heavier. Only the Overlord-C's slightly elongated nose cone and lack of fighter-bay doors distinguish its external appearance from the original Overlord's.
         The Overlord-C's arsenal contains a heavy energy weapons grid, and the Overlord-C's cooling circuits allow a captain to fire all the craft's weapons simultaneously without heat problems. Despite this impressive arsenal, the Overlord-C lacks weaponry in its aft quarters. This creates two vulnerable areas on the vessel, which enemy pilots have exploited to destroy many Overlord-Cs. As a result, Overlord-C pilots must rely on a constant series of evasive maneuvers to keep attackers from exploiting these vulnerable areas.