The Bannermen attacked the Chimeron home planet, Chumeria, intending to wipe the Chimerons out. However two Chimerons escaped in a Bannerman craft. Gavrok lay in wait for them and shot Chima. Before dying, Chima shot at Gavrok, knocking him from the craft. The other Chimeron, Delta, fled in the craft. Gavrok and the Bannermen followed her to a toll port where they interrogated the tollmaster as to her location. When he proved unable to provide the information, Gavrok killed him.