"Atop the ramparts of Skull Castle, a vision of madness stood..."
Rockman: The Robot War is a novelization of the original Mega Man game, written by Ben "Maelgrim" Roberts. A stellar example of Adaptation Expansion done right.After the Third World War, Dr. Light and Dr. Wily decide to create "androbots" to do the jobs human can't or won't do. However, Wily eventually decides that humans would be better without them...The fic can be found here.A sequel is currently being written adapting the second game. It can be found here.
Also has a bit of decay, since Rock and Roll and Blues as they learn, have mental abilities akin to their youngest brother.
Broad Strokes: The second story brings in some of the Legacy Of Metal characters, albeit with some alterations. As Erico's and Magus' work (especially the latter, more so early on) drew so much from the original, it's quite fitting.
James Walken could easily be considered a Knight Templar. His religious paranoia was such that he considered robots a sin, as well as homosexuals and working mothers, to the point neither of which he allowed in his army.
Like father like son. We learn that James' dad was a minister and terrorist. When his dad is killed while resisting arrest, from robots, James refuses to believe the charges listed, thinking the robot made a mistake.
Combat Pragmatist - In the Iceman fight, Rock uses the Rolling Cutter to decapitate Iceman.
Continuity Cameo - The sequel mentions plans for two undeveloped prototype masters, Kronos and Hades. Their description makes it clear that they are Time Man and Oil Man of Mega Man Powered Up.
Cruel Mercy - Rockman spares Docman's life, condemning him to a slow and painful death.
Deconstruction - Many tropes from the actual games are explored and you come to realize just how bad things need to be so that humanity needs to build robots like the Robot Masters in the first place as well as why the world would need a little blue robot to save the world.
The sequel is also covering the fallout of the previous war. Dr. Light is on trial for supposed involvement with Dr. Wily's antics.
While not named, both the first and second stories have introduced models of robots that will become future Robot Masters. Thus far, we've gotten references to Gemini Man, either Metal Man or Shadow Man, and Tengu Man.
Enemy Mine: Despite differing opinions on robotics, Dr. Wily and Walken are willing to work together to prevent people from becoming over-reliant on robots. Of course, they plan to betray and kill the other to Take Over the World for themselves afterwards.
Even Evil Has Standards: When James Walken is killed, Dr. Wily says a less than flattering farewell for the person that was arguably more twisted than himself.
Even Walken shows a moment of this. He recognizes that not everyone working with robotics would want to, but to feed themselves and/or their families. He also rationalizes that if such people die in an HSL attack, they'll go to heaven.
Evil Luddite: The Human Supremacy League hates robots, although James Walken is far more extreme. They don't seem to have problems with other kinds of technology, although given the state of the planet, they may not have a choice.
Frickin' Laser Beams: Laser weapons are used occasionally. Unlike their depictions in the games, the story states that lasers are invisible.
Freudian Excuse: Walken's hatred of robots stems from the childhood murder of his father. Said dad, George Walken, was a minister who had a similar but less extreme hatred for robots, was killed by robots that were originally sent to arrest him for illegal weapons sales, treason, and several other charges.
Power Copying - The trope itself goes without saying, but it should be noted that the story actually subverts this twice. It isn't until Rock is dealing with Iceman, the third boss, that he actually gets his weapon copy ability. Also, the "Super Arm" Rock gets is just an upgrade to his hydraulics, not a weapon. So in all, he gets five weapons in the story.
Stay in the Kitchen - Lampshaded by Roll. She thinks Dr. Light wants to upgrade Rock and not her because she's a girl. Dr. Light replies they're both robots, but she has more damage to repair from the League's bombing attack on top of the upgrades, so Rock was just the smarter choice. She was going to receive them too, but her armor was stolen before that could happen.
Played straight with Walken, who doesn't allow working mothers in the League.
Three-Laws Compliant: The Laws come up again and again. Their effect on Rock is explored throughout the first, while the sequel has so far placed focus on their frustration of Roll and Docman.
Viewers Are Geniuses - Many of the literal mythology gags and a lot of the diction require much knowledge.
Well-Intentioned Extremist - Dr. Wily first wanted to prove that humans were becoming too reliant on robots, so he joined the League to get the resources he needed.
World War III - Happened long before the events of the story, as Dr. Light remembers serving at that time. It's described as being short lived, and ended when the nuclear fallout, combined with mass deforestation and pollution, killed 98% of all plant life. The fallout has also rendered the South Pole as the only place with drinkable water. Combined with all the radioactive rubble, human workers just aren't able to work effectively which is why Dr. Light invented the robot masters.