|The information in this article comes from Dynamites, warlord of mars and is not written by Edgar Rice Burroughs.|
Bantor Thren was responsible for the murder of the caretaker, he desired to end life on Barsoom because he had knowledge of the true nature of the Therns and the Valley Dor. He believed ending life on Barsoom would be the best way to end the Thern's false religion!
After this plot failed, he tried to kill Dejah Thoris and Carthoris, in a convoluted plot hoping to end the Therns and reveal them for what they are. Before he could fulfill his plan he was killed by Dejah Thoris and Carthoris!