The Thanatar Cavas Siege-automata are some of the largest automata fielded by the Mechanicum, purpose-built to function as mobile artillery platforms. Their massive frames are highly resilient to enemy fire, and they are armed with the Hellex pattern plasma mortar – a weapon that launches superheated energy spheres with destructive force at enemy positions.
Each Thanatar comes outfitted with shock chargers and a twin-linked mauler bolt cannon. The set also includes a Mechanicum Macro-constructs transfer sheet with 394 transfers.