Released in 1987, Grotusque transforms into a robotic winged sabertooth tiger. Pressing a button on the back of his beast-mode neck also results in "cold" sparks shooting from his mouth, which opens and closes. His "Vaporator" weapon can also mount on his beast-mode back.
I bought Grotusque from a fellow collector who was letting go of his vintage TF collection. I am also currently in negotiation with him to secure three other Autobot Headmasters. Grotusque comes wrapped in clear plastic and in very good box condition (easily c-9+) with no flap crease.