The story of the 9th Rockman game was short and simple, but the idea behind it was always so peculiar to me. To recap, there is now a 4th law of robotic which gives them expiration date - this encourages scientists to create newer and more efficient model while saving energy and resources from maintaining old and outdated ones. However, it proves to be a problem because the robots in Rockman have "souls" akin to that of a human, which causes them to rebel and bring destruction humanity.
This is a story that touches on ethnics and certain area of philosophy, but particularly, I'm interested in how those elements affects the robots' psychology. In the game, after defeating 8 robot masters, you would get a cutscene showing how Wily manipulated them into joining his side and how he eventually reprogram them to be destructive. However, the robots still wanted to be of use to the humans until the end:
Dr. Wily: "Just because you reached some arbitrary expiration date doesn't mean you should be scrapped! You're all still quite useful! You have a right to live! I'm going to help you. Together we'll show the world how useful you all still can be!"
Robot: "Hmm… perhaps you're right. We still want to be of use to people. Can you repair us?"
All in all, their usefulness dictates whether they deserved to live or not. Before I made this post, I thought Dr Wily was going to talk about how they shouldn't be scrapped because they have souls, but after rereading the script, I realized he just reverted back to talking about their usefulness. The robots don't seem to mind at all. It is as if they were programmed to think of way, or at least were conditioned to think that way due to their environment. If I, a human, were to be born along side my peers then before I even reach old age, I was suddenly told "The new is generation is better than you at art, so you need to be executed", then I would most likely lose all of my reasons and start going berserk as well. This is what happened in Hitoshi Ariga's manga: The 4th law get administered as usual, Dr Wily said the same thing, but he didn't reprogram them or manipulate them, he only offered to get rid of their expiration date. In the end, it was up to the robot themselves to decide whether they would revolt or not (and all of them did).
Hitoshi Ariga's interpretation is more believable than it is in the game, but it's hard for me to believe that all 100% of them would turn from obedient robots to war machines just like that. Once again, If I was suddenly told that my life was cut short because someone was better, I would be mad, but that is with the assumption that I am a human. The 9th numbers and robots, even though they have emotion and "souls" similar to that of a human, they are not human; It is similar to comparing the life of a dog and a cat. Of course, we haven't discovered any species that have a level of intelligence and emotional capability similar to human, so it is impossible to tell, but I think there would be a noticeable amount of conflict that comes from being a robot (a species that is meant to die and be improved upon) that has a human mind (a species that wants a fulfilling life).
Assuming there was a robot who wanted to live (as in Hitoshi Ariga's interpretation), but also believe that their life was taken for granted (as in the game version), there would a difficult character arc whether they were mind controlled by Dr Wily or not. Let's say it is Hitoshi Ariga's version where the robots act on their own, this character would follow the other 9th numbers in the revolution to get rid of the 4th law, but I doubt they would contribute that much because they feel indebted to the humans. They are incapable of helping those around them in the revolution, but at the same time they aren't willing to turn themselves in and end their life quickly. This also leads to another problem. Let's say they couldn't care less whether they die or not, but if they are close to the other 9th numbers, it would be a problem if they just gave in because that would mean their friend/sibling could potential die because of their listlessness. If there was a dilemma like that, it's either you lose yourself and join your siblings in exterminating human, or you run away from both the 9th numbers and the human and delay the inevitable.