User blog comment:Loolveus/Pure Evil Proposal: The Master (Classic Who)/@comment-43436960-20200215141710/@comment-30861466-20200215150708

The only times he "helped" The Doctor in this era were him trying to achieve his own goals of prolonging his life, the other time was when he full on had intention of even helping him and just used that as an excuse to get him out of the way.