Kraxnor

Kraxnor was a Sycorax leader. He possessed one of the gemstones called the Sanguinare and attempted to use it to save the universe from dark energy. This gemstone powered his Sacrifice Engine which was due to harvest the souls of four planets to open a rift in the universe and drain the dark energies out. The plan was thwarted by the Twelfth Doctor, Grant Gordon, Lucy Fletcher and Jennifer Fletcher who were able to remove the gemstone. This caused the Sacrifice Engine to detonate, in which Kraxnor made his escape in an escape shuttle. (COMIC: Ghost Stories)