With "Autocracy" winding down I was in some ways glad to see a plausible reason given as to why Optimus became more of a "good" Prime than his predecessors. Because when you stop to really look over the Prime legacy that's been given so far in IDW's run, well.... Nova Prime: Okay so his main descent into true evil occurred after he went over to the Dead Universe and became Nemesis Prime with the Dark Matrix and all. But even in the earliest known depictions of Nova Prime, i.e. the ones in Furman's "Spotlight: Optimus Prime", we hear that Nova Prime's explorations were based on his belief that the transformers were superior to other races in the galaxy and needed to "expand" and master the universe. Basically drawing parallels to Hitler's "master race" ideology and need for Germany to "expand" in order to have more "living space." OK, so if the best real life analogy for Nova's character depiction is Hitler, I think you'd have to put him on the flat out evil side of the ledger. Sentinel Prime: Arguably the least misguided of the three Primes prior to Optimus that have been thoroughly depicted by IDW, that doesn't excuse the fact that he was also a prick to his own soldiers and the populace, and seemed very much more focused on control and show of force than on upholding any abstract concepts like justice and freedom. Sentinel was present when Optimus ranted against the Senate's corruption and rather than make any sort of moral stand alongside Optimus at that point, he instead went along with the Senate and had his men escort Optimus out. He was basically complicit with the Senate's corruption in that sense. That said, he's harder to paint as having done anything that really was flat out evil in itself. But he was never part of the "solution" for Cybertronian society, so that pretty much made him part of the problem. Zeta Prime: His characterization to me is sort of a cross between Sentinal and Nova. He wants to use force to keep things orderly and put down rebellions like Sentinel did, but he openly admits to his belief in doing so to accumlate power and asserting his own superiority over others. He is a ruthless backstabber who will apparently kill anyone, including plan the assassination of his own officers, in order to increase his own personal power and control. Hard to get much more onto the "evil" side of the ledger than that. So my question is, what exactly is the big deal on Cybertron about becoming a "Prime" when the whole lineage we've seen was one of prickery and flat out evil? I think having just one wayward Prime/fallen angel type of guy would have been fine in the continuity and interesting...but it seems like they've taken it so far with so many Primes doing bad things that you could almost plausibly continue to "root" for Megatron even well after he becomes a sadistic mass murderer because hey, lets face it, he's just getting revenge against generations worth of oppression and evil leadership. Maybe that's the point, though more likely it seems to me that you had three different writers telling the backstories of three different Primes and each wanted to create drama by making that Prime "darker" than Optimus...but the net result just gets kinda messy.