Origin
The newly appointed jeddara (ruler) of Yorn, Tash Lia, was targetted by Boll-Rem. To keep her safe, Dejah Thoris and Kantos Kan were sent to her to take her to Helium. But Boll-Rem was able to crash their airship in the desert. Hunting them on foot, Boll-Rem came face-to-face with Tash Lia. Instead of being killed by him, Tash Lia opted for suicide by jumping off a cliff. Momentarily stunned, Boll-Rem was pushed off the same cliff by Dejah Thoris and died on the bottom.