Terraformar Insecta are the primary antagonists in the anime series 'Terra Formars'. These genetically evolved humanoid cockroaches reside on Mars, where they were initially sent to help terraform the planet. Over time, they adapted and evolved into powerful, intelligent beings with immense physical strength and formidable combat abilities. Their primary role in the series is to challenge the human expeditions sent to Mars, leading to intense battles. The Terraformars symbolize the unintended consequences of humanity's attempts to manipulate nature, adding a profound theme to the series.