Kroagnon designed Golden Dream Park and the Bridge of Perpetual Motion. When he created his masterpiece, Miracle City, he refused to move out, unwilling to let the residents ruin his work by moving in. He was eventually forced out, but left behind booby traps that killed many of the residents. He fled to Earth and built Paradise Towers, but when he again tried to prevent people from living in his creation, his disembodied mind was exiled to the Towers' basement.