Metal Hunter
The "Metal Hunter" is a large, plant-like construct built by the Vok. The site used by the Hunter had previously been responsible for abducting the Maximals Airazor and Tigatron. It was presumeably deployed once the Vok learned that their Planet Buster had failed to kill the Transformers.
The Metal Hunter has the ability to unleash a devesatingly powerful blast which dealt severe damage to all Cybertronian life. Strangely, the effect was much less noticeable on Transmetals and Fuzors, both of whom were knocked out for several minutes, but unharmed.
Megatron attempted to steal the weapon and take it to Cybertron, where he would use its power to conquer the entire planet. This would also bring Cybertron's exact location to the Voks attention. Rattrap managed to sabotage and destroy the Hunter, moments before its journey.
The weapon was never actually called The Metal Hunter in either of the episodes.
