Master Chief IRL
Now, this is just my personal opinion- and of course, being the one and only Didact, my opinions are facts- but the HALO saga took the concept of powered infantry armour to its most impressive logical conclusion with the MJOLNIR suits of the Spartans. Those things are just plain badass.
The fact that the games (mostly) concentrate on the experience of walking around in one of them as a 7-foot-tall cybernetically and genetically enhanced murder machine armed with everything from assault rifles to rocket launchers to FREAKIN' LASERS just makes the idea that much more appealing.
Actually, this is all nothing new. Most Tier 1 and Tier 2 militaries around the world have been moving toward some kind of powered armour for years, if not decades. The TALOS system in the US, and its predecessors, the HULC and XOS experimental powered exoskeletons, are but the latest in a long string of such ideas.
Sooner or later we will figure out how to put a man into a powered assault suit that will shrug off kinetic impacts and double, triple, or quadruple the lifting capacity of its wearers. That day is probably a long way off- but it's not that far away.
Remember, it wasn't all that long ago that most of us would scoff at the very notion of artificial intelligence, robotics, and automation making both blue-collar and white-collar workers largely redundant across many industries- but that day is here right now.
Already, artificial intelligence is being used across a huge range of applications- and while the concept is not quite at the level of SkyNet going sentient and killing us all, and that kind of AI is actually a bit overly dramatic in that sentience is, for now, something of an impossibility for them, we are seeing AI being used in industries ranging from financial algorithms to manufacturing processes to linguistic analysis to, of course, porn.
(Never, ever forget Rule 34.)
Eventually technology will catch up with human creativity. It's just a matter of when.
And also, of course, as to whether the civilisation that made such innovations possible hasn't simply collapsed because it refused to breed or cucked and pozzed itself so thoroughly that it was swept aside by another, lower-tech, but far more masculine and headstrong civilisation.
One must never forget Walter Bagehot's excellent epigram: