The Tenth Doctor was fond of describing himself as a "man who never would" despite the fact that he was a genocidal maniac. Ten's penchant for mass murder made this statement somewhat hypocritical, particularly when he would chastise others for wiping out entire civilisations. Ten was also a fan of playing God by manipulating fixed points in time to cause others to kill themselves. In The Waters of Mars one potential companion shot herself in the face after Ten destroyed her timeline for a laugh.