Primal and Megatron

The rusty walls of the laboratory tremble from the explosion. Axion, a young Maximal scout, slides behind a shattered console, clutching a crystal with an ancient code in his hand.
“Transmit the data, beast,” hisses Viperon, the pre-dragon commander, his bladed tail slicing through the air. Behind him, three warriors block the only exit.
Axion activates a hologram: it shows a schematic of a weapon capable of burning out the biosphere of an entire planet. His optics widen in horror.
"You will destroy billions!"
"Organics is the disease," Viperon takes a step closer. "We are the cure."
Axion clutches the crystal—and leaps through a gap in the floor, falling into the darkness of the long-forgotten tunnels of Cybertron. Viperon looks down, his eyes burning red.
"Hunt."

Primal leader of the beastbots
Megatron, leader of the pre-dragons