The Cybertronian Dragon is a huge, 3 headed dragon with the capability to fly.
It takes the form of a Hydra(3-headed dragon) with large wings, enabling it to fly. It has a long tail, 4 legs, and 3 heads. It is ginormous and much bigger then Strafe.
Unfortunately , nothing but its appearance is known about it, as it is only shown briefly in the 'Last Knight' trailer. It does appear on Earth.