Beast Machines: Transformers (1999)

Following the conclusion of the Beast Wars, the Maximals find themselves back on Cybertron, only to discover the planet overrun by the relentless Vehicons engineered by Megatron. Faced with this new threat, they embark on a desperate mission to liberate their home from Megatron's oppressive rule and revive its true essence. The struggle for survival and the quest for restoration drive the Maximals as they battle against the mindless forces and seek to reclaim their legacy on Cybertron.