Thaumoctopus memeticus were an aspect of the Enemy. Named after the Thaumoctopus mimicus by Maddox, they were cephalopod creatures with the ability to perfectly mimic any living thing. They existed in four dimensions, using tentacles from their own pasts and futures to make up their mimic forms. They could also turn themselves into ideas.
The Tmemeticus began developing in the Cretaceous period when a timeship of the Great Houses crashed into Earth's ocean and began affecting local biology. It was only through about 65,000,000 years of evolution that the memeticus fully became a threat to the Great Houses.