It can easily be observed that Optimus is largely defined by compassion, but it would seem that given Megatron's myriad immoral deeds, that he would actually deserve less compassion from Optimus than his decepticon underlings. What makes Optimus want to give Megatron the benefit of the doubt? This question applies to all Transformers continuities. In my own experience, I can remember many occasions in which Optimus Prime attempted to negotiate with Megatron rather than fight, and in some cases seemed inclined to spare Megatron's life - even cases in which the two outright worked together - all this in the G1 cartoon and comic plus the DW comics. In the live action movies, Optimus proclaims his goal to either "defeat" Megatron or sacrifice his own life to destroy the Allspark fairly early on, but says nothing about killing or destroying him. Although he outright kills Bonecrusher in combat, he seems remorseful over Megatron's death ("you left me no choice, brother"). Why? Why kill Bonecrusher for his crimes, but feel kinship and remorse for Megatron and regret over his demise? In Transformers Prime, Optimus outright declares that he had once hoped to change Megatron's mind rather than fight or destroy him. Why? Prime has no problem ripping the decepticon troopers to pieces and helping Skyquake to an early burial (although it's true, he did attempt to negotiate and reason with both he and Starscream). I think it can be inferred that there has been a tradition in Transformers of Optimus feeling there is something in Megatron worth redeeming. But what is it, and why? Opinions?