* ArcFatigue: Mr. Black is introduced just after Episode 4 and his arc takes until Episode 12 to finish off with information trickling out.
* ArchivePanic: 1.2 million words over 190 chapters. Grab some coffee before attempting a binge.
* SugarWiki/AwesomeMusic: Music in a fanfiction? Well, sort of. The author suggests playing [[https://www.youtube.com/watch?v=HFKtYCcMWT4 Wily]] [[https://www.youtube.com/watch?v=pjrJ01QgPQ0 Castle 1]] from Mega Man 2 during Rock's first raid on Skull Castle.
** This happened again with Proto Man whistling his theme to Nomad.
* CompleteMonster:
** [[FantasticRacism The Conduit]], later revealed to be Lex Loath III, is one of the series's most recurring villains, alongside Dr. Wily. The Conduit is the mysterious leader of a small organization of minions, whom he is [[BadBoss frequently shown mistreating]], particularly Mr. Black. The Conduit really comes into his own in "Episode 12: Fade to Black", where it is revealed that he plans to kill Dr. Wily so that he can use his technology to create a virus to infect every single robot and eventually wipe them all out. Mr. Black is [[EvenEvilHasStandards so disgusted]] by this plan that he ends up turning on Conduit, to which the latter responds by trying to kill him. After his plan fails, Conduit learns that Dick Ferguson has information that could ruin his scheme, so he successfully sends his bots off [[HeKnowsTooMuch to kill him]]. By the end of "Episode 15: The Week. Three Years Later", Conduit unleashes the Roboenza virus before slaughtering [[CopKiller some police officers]] and [[WouldHurtAChild a young girl]], and [[FrameUp framing ProtoMan]] for it. In "Episode 16: Pandemic", the virus has already killed hundreds to thousands of people. It is also revealed that Conduit plans to dispose of nearly all of his minions once [[YouHaveOutlivedYourUsefulness they have all outlived their usefulness]].
** "Episode 14: Invasion of the [=StarDroids=]": [[AliensAreBastards Sunstar]] is an [[AncientEvil ancient]], god-like alien worshipped by the Stardroids who establishes himself as among the most awful villains in the series despite his short screentime. Sunstar had previously led the Stardroids on a quest across the universe to conquer and [[TheSocialDarwinist purge it of what they perceived to be inferior life]]. One of Sunstar's minions, Luna, was responsible, under his orders, for destroying many planets by [[EndlessWinter freezing them solid]]. They were opposed by the robot Duo, whom they would [[ForcedToWatch force to watch]] as they destroyed a planet at one point. When Sunstar is freed in the present after he was sealed, he would take over all screens in the world and broadcast their invasion to the entire world as they plan to continue their quest of purging.
* FanNickname:
** "Sweetie Met" for Peekaboo before he was named.
** "Nomad Woman" for Nomad before she was 'named.'
* FandomSpecificPlot: It hits some of the common Ruby-Spears ones like introducing its own version of Bass, Wily treating Proto Man badly and [[spoiler:Proto Man leaving Wily.]]
* GrowingTheBeard: While the first two episodes are good, the story really hits its stride with Episode 3, exploring more emotional territory and providing its own spin on several episodes. Episodes 4 and on continues this by starting to tie the subplots together and introducing new takes on elements from the game.
* SugarWiki/HeartwarmingMoments: [[Heartwarming/MegaManDefenderOfTheHumanRace Has its own page]].
* IKnewIt: So it turns out [[spoiler:Dr. Wily's final plan was Zero after all.]] Nobody was truly surprised, given the hints were pretty unsubtle toward the end and [[spoiler:Zero cropping up to fight the original Mega Man]] is a common FandomSpecificPlot that edges towards cliche.
* LikeYouWouldReallyDoIt: While still quite the moment that struck a cord with the readers, people weren't quite buying that [[spoiler:Dr. Light would get killed when Bass accidentally shot him, if for no other reason than he still had to build X.]]
* SugarWiki/MomentOfAwesome: [[Awesome/MegaManDefenderOfTheHumanRace Has its own page]].
* MoralEventHorizon:
** Dr. Wily crosses this and keeps on running when he attempts to murder his former partner by blowing him up with a bomb and kidnapping his children despite his protests.
*** In-universe, Proto Man thinks that Wily using a program to directly inflict pain is crossing the line.
** The Stardroids crossed it in a flashback by destroying a planet in front of Duo, stalling him long enough to make him watch.
* NightmareFuel: [[NightmareFuel/MegaManDefenderOfTheHumanRace Has its own page]].
* SeasonalRot: Discussed. Ending the fic after eighteen episodes was an attempt by the author to defy this trope and end the story while he still felt it was good.
* {{Squick}}: In Episode 11 [[spoiler:Wily remarks that people in pain and terror turn him on]]. Lampshaded by [=ProtoMan=].
* TearJerker: [[TearJerker/MegaManDefenderOfTheHumanRace It has its own page]].
* TrappedByMountainLions: Some of the early subplots, like Lyn's problems with her brother and [=VicTech=]'s efforts to get into the robot hero market, have this air early on, due to how disconnected they are to the main plot. But starting with Chapter 4, the subplots become more directly affiliated with Mega Man and have a significant effect on his adventures, subverting this trope.
* UnexpectedCharacter: Few people expected the Mega Crew leader to be Tiesel Bonne from the ''VideoGame/MegaManLegends'' series, and ''nobody'' expected [[spoiler:the Conduit to be Lex Loath III and working with Glyde]].
* TheWoobie: Mega Man, Roll, and [=ProtoMan=] all have moments of this at times.
** Lynn and Castor as well.
** Peekaboo the Met, whose timid personality came about due to torture at the hands of Wily.
** Nomad is activated by mistake, feels pain almost immediately upon waking, is unable to speak, overhears Wily talking about ''wiping her memory'', and doesn't get a name before running off.
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