Heavily-armed and impressively armoured, the Leviathan Siege Dreadnought is an alternative development of the highly successful Contemptor design. These rare and mighty engines are prized by Astartes commanders, recognised as savagely powerful siege and hunter-killer units capable of bearing a varied and devastating armoury. While some Legions valued the Leviathan for its crushing close combat momentum, others preferred to exploit its long-ranged potential, unleashing volleys comparable to a full battle tank.