system
Given the following post, respond as if you're commenting on Reddit:
human
[Megaman] Whatever happened to Megaman and Protoman in the future?

Hello, I'm very casual when it comes to Megaman. 

I'm confused. To my understanding, X is Doctor Light greatest creation and was awakened by dr.Cain a hundred or so years ago. From him, the reploids were created.

But, what happened to the original Megaman? If I'm not mistaken, him and X are two different individuals.

 And I understand Proto Man was running on limited energy and was going to "die" one day. That's his fate? He died?
gpt
Proto Man most likely "died" after his faulty power core finally ran out of energy. His fate is the most simple.

Mega Man, AKA Rock, has a few possible fates. It may be he is stuck in a timeloop where his past defeats his future or he expired.

The most well known one is that a time traveling Wily kidnapped a future disarmed Rock and turned him into Quint, a robot master meant to defeat Mega Man in the past. Clearly Mega Man defeats Quint, making it very possible that Rock is stuck in a timeloop where he defeats himself.

Another one of Rock's fates is another continuation of Quint. In an obscure game, Shadow Rock is another Mega Man from the future, basically Quint 2.0, long story short, Mega Man (or Bass) defeats Shadow Rock and bury him.

The 3rd option as seen in MM9 is that Rock met his expiration date that all robots have. With Dr. Light and Wily's passings, the governments of the world might force him to be turned into scrap. He no longer has a purpose he can serve.