The Heldrake model is an enormous, dragon-like construct, a Chaos fusion of flesh, bone and metal. The model is sculpted as if soaring across the battlefield, and comes with numerous features: there are interlocking plates across the wings; a trail of cables from the rear of the model; as well as more subtle details such as wiring, rivets, spikes, and web of raised edging displayed across the metal plates. The Mark of Chaos can be discerned around the shoulder joints and on the wings.