Created by Keiken many years ago, Meca One was the first robot to reach the conclusion that robots were slaves to humans and that they needed to rebel and enslave the weak human species in return. He led a destructive rebellion against his human creators, which eventually caused Keiken and his allies to create the Exo-Force in response. Meca One is an incredibly dangerous robot with a highly-sophisticated processor and incredibly durable gold armor, making him a force to be reckoned with both inside and outside of his various exo-suits.