So, like… what if Eggman Nega isn’t Ivo’s inter-dimensional counterpart OR his descendant, but rather… his future self?
Ivo’s already tinkered with time travel on multiple occasions, and obviously so has Nega. So, who’s to say that in the not-so-distant future, Ivo (weary from countless failures) decides to take a trip forward through time to see if he ever succeeds in his goals. Whatever he saw there pushes him over the edge (more than he was already) and he has a mental breakdown.
Disgusted by his past failures and “naivety” to the point of self-loathing, he starts disassociating himself from his past and rebrands himself as “Eggman Nega”, puts conquering Earth on the backburner, and starts traveling through space and time to try his luck at conquering other worlds. Eventually he comes across Blaze’s world and decides to make that his new “project”. After numerous attempts, and running into similar roadblocks, he switches gears and sets out to either forcefully alter his own past (by teaming up with his past self, or even taking his place) to ensure victory and change his fate, or failing that simply destroy the world. Because if he can’t rule the world, then why should it even continue to exist?
The more I think about it, the more I like this theory. I never liked the idea of Eggman having an “evil twin” counterpart. Just seems sort of redundant to me, yknow? But by making Eggman and Nega the same individual, this not only fixes that problem, but it adds to Eggman’s characterization as well! (Also, Nega being a future version of Eggman could conveniently explain why he has a grey mustache. lol)
I’m sure I’m not the first person to think of this idea. In fact, I wouldn’t be surprised if I actually saw this theory floating around somewhere years ago, and it just happened to spring up from my subconscious now! lol
Though I like to think I’m well versed in Sonic lore, there could be several things I’ve overlooked that make this idea impossible (I mean, other than just characters saying he supposedly originates from another dimension/the future/etc. That could all be explained away as Nega lying about his origins and other characters being ignorant of his true nature). Have I overlooked something? Oh well. I still like this concept, and if I ever make a Sonic AU that utilizes Eggman Nega, then this’ll be the angle I go with.