Heldrakes were once noble fighter aircraft flown by Space Marine pilots, though they are now something much more hideous. The dark energies of the Warp have granted them a form much better suited to the predatory role their twisted spirits savour. While all Heldrakes have sweeping wings and the powerful engines common to all Chaos fighter craft, such as the Hell Blade or Hell Talon, the resemblance ends there, for their aspect is one of flying daemonic reptiles or pterosaurs more than any ordinary aircraft.