The Ikarrans were an ancient, advanced race which had organic technology, tools made of living material. By the thirteenth century on Earth, they were a dead race. Their home planet, Ikarra VII, is long since dead--a vast desert is all that is left.
Over their long history, the Ikarrans were invaded by over a half dozen different alien races. Each invasion was more deadly than the previous, creating extreme losses of life. The Ikarrans eventually created organic warriors to protect them. The warriors were actually sentient artifacts that bonded themselves to a host to create powerful, living weapons capable of both independent thought and able to adapt to new situations. Rather than create an entirely new synthetic personality, they programmed them with the personality of the lead researcher, Tu'lar. The machines were also programmed to kill anything except for "pure Ikarrans." A coalition of religious fanatics and military extremists (which operated the government) defined the parameters for a "pure Ikarran," but based it on ideology rather than biology.
Twelve of these devices were built, and eleven of them were released when another invasion came. When the last invading race was destroyed, the machines began to kill every single Ikarran since no Ikarran fit the description of a "pure Ikarran." When everyone was dead, the machines were destroyed through centuries of neglect--all save the last device.
In 2258, Vance Hendricks, working for IPX, discovered the last remaining device. He and his partner Nelson Drake smuggled it to Earth Alliance station Babylon 5. There it bonded with Drake, transforming him into one of the organic warriors that nearly led to the station's destruction. Commander Jeffrey Sinclair was able to confront the warrior and force it to realize that Ikarra VII was nothing but a ghost world.
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