Kelden Amadiro was the head of the Robotics Institute on Aurora. Being a Spacer, he was against the denizens of Earth expanding to other planets. To this end, he attempted to destroy Earth, and its people, by dramatically increasing the surface radiation, a feat which was prevented by [character:gr6IGiJ8EeaAugAeyeRIgw] and [character:t98ecKziEeaAuwAeyeRIgw].