Grox Infection Pod

The Grox Infection Pods are huge pods launched by the Grox in order to conquer worlds. The pod spreads an infection that causes purple fog, water and plants to spread. The pods also create Dronox, Insectrox, Scavengers and Scanflies. These creatures wipe out all life on the planet so the Grox can settle in. The pod will grow "roots," which will come out of the ground away from the main pod and will start producing the creatures mentioned above. Acording to Warrior Empires, the pod has to be taken out as soon as it lands. If it is not, it will grow into the planet so much that the only way to get rid of it is with a Planet Buster, however, that also removes the planet.

Trivia

 * The purple-ness of the infection is similar to Gar' Skuthers infection.