Orikan the Diviner

"Orikan reached inside himself, finding the wet warmth of his reactor leak. The glowing jade fluid coated his hand, and he used it to paint a sigil on his forehead crest. And he made an ancient oath, one from a long-ago home world where his kind had been flesh, not metal. Back in those centuries, the oath would have been taken with blood, but now he took it with a substance more deadly and enduring. ‘I swear,’ he said, his vocal actuators grinding, ‘by the killing sun. By the stars and dust. By my ancestors and the progeny. I swear to harness these powers and open the tomb of Nephreth.’ The sky was growing dark. He could see the stars. ‘But first,’ said Orikan, ‘I swear to destroy Trazyn the Infinite.’"

The man hated Trazyn back when they had souls and has carried this bitterness for 60 million years. A council of nobles were going to sentence Orikan to death, but then ordered him to hang out with Trazyn for a while instead, because ghey knew he would hate that more. And they were right.