Kilava Onass was a renegade Bonecaster of the Tarad clan of the Logros T'lan Imass, a Soletaken, and the sister of Onos T'oolan. She had served clan chieftain Kig Aven in the heart of the First Empire, but had refused to participate in the Ritual of Tellann, and so did not share the state of undeath like the rest of her people. As a Soletaken, she took the form of a sleek blue-black coloured panther more than twice the length of a man. On all fours, her eyes were nearly level to those of a man.