I felt that Megatron's change a leg on his own delusions of power seeming broken. From Season1 we saw that he considered himself worthy of being Unicron's avatar and when Unicron said no he found a way to get rebel against him. But in here we have Unicron using him while completely denying him and torturing him and not only does Unicron remind him over and over that he is nothing he also deems their shared body a weak and unworthy form. Megatron even tried to argue that his body was good enough.
True, that’s a good point.
See, my issue with Megatron’s sudden wiliness to stop fighting comes from just how bombastically evil his character was set up to be in the show. This was a man who shot children, murdered loyal followers, and watched non-pulsed as his armies died for his own ego. Any attempt to keep him down only served to further his lust for further combat and gore. But in Predacon Rising, after a few days under Unicron’s total control and abuse, only then does Megatron fully understand just how awful true subjugation is and wants to stop? It’s not completely out of nowhere, but it’s still a rapid character turnaround for someone who had previously responded to violence against his person with equal or greater force.
I mean, you could argue that Megatron is no longer violently insane after being murdered by Bumblebee and the Star Saber (like, maybe the Star Saber healed his madness somehow?). Or that being denied a peaceful death by Unicron and the continued torture was sufficient to make Megatron reconsider his entire life’s decisions… but I dunno. Compare Knockout’s choice to join the Autobots based on survival and continued access to earth. Yes, Knockout’s faction swap was also done quickly, but Knockout was always set up as someone who put his personal pleasure over any larger ideals of the Decepticon cause. So while one can argue about whether or not Knockout truly deserves to live happily-ever-after on Cybertron with the rest of the Autobots given his repeated attempts on human/Autobot life
while Dreadwing and Skyquake just got rewarded with more death, I personally feel all the decisions Knockout made were at least believably in character.
Like I said before, Predacon Rising is great, Transformers Prime is great (and Rescue Bots is great too). I love the series and I love this ending film. Small misgivings or little hiccups don’t really cause major problems with the overall series for me.