Optimus obviously thinks humans as innocent people to the conflict between Autobots and Decepticons. So when Raf gets hurt, he nearly loses his cool and became determined to take down Megatron. However, does this also prove Optimus cares about humans more than his own kind? Bulkhead said Optimus never loses his cool and Ratchet said Optimus keeps his emotions in check. The series started with the death of one of their own, Cliffjumper, yet we never saw much emotions from that loss. When Ratchet had his judgment impaired from the synthetic energon, he accused Optimus that Optimus have no problem endangering the lives of his fellow Autobots. Judging from what we've seen, there may be a little truth to it, although one can argue Opimus have more confidence in Autobots's abilities to take care of themselves than humans. Still, the fact that Optimus also had wished to change Megatron's mind, and it took Raf, a human on brink of death to flare up Optimus's emotions and finally determine to kill Megatron? What should we think of this? Optimus loves humans more than his own kind?