As sole King , Mithridates VI showed clemency towards his mother and brother , by not executing them .
He was able to remove his mother and Chrestus from the Pontian throne and become the sole ruler of Pontus .
As sole King , Pontus   showed clemency towards Chrestus mother mother and brother , by not executing them .
He was able to remove his mother and Chrestus from the Pontian throne and become the sole ruler of Pontus .