Nightmare Fuel / Mega Man (Classic)

• The end of Mega Man 2 with the final Wily stage. A creepy cavern with what looks like blood, lava, or acid dripping from the ceiling, no music, and Dr Wily turning into a holographic alien, with only one weakness and the ability to kill you in 2 to 3 hits.
• 2's Wily Stage 3 has a very spooky feel, with the tense music, dark and grimy sewer-like environment, and the deep underwater shafts lined with One-Hit Kill spikes. Those enormous Shark Bots don't help, either; especially when they suddenly leap out of underwater gaps to ensnare you.
• A lot of younger players were freaked out by the fast, screen-crossing laser beams and the lights going out in Quick Man's stage in 2. Even more so when they found the aforementioned lasers could kill you in one hit regardless of your health; and if you were just a bit too slow to dodge them, they more often than not render the screen impassable without having to commit suicide just to try again.
• In Mega Man 3, the music that plays in Wily Stage 5-6 has a scary feel. Combined with a lot of power-ups, you know this will be one tough fight.
• The European boxart for Mega Man 3 is also worth bringing up. Mega Man, Rush, Proto Man, and the Robot Masters look relatively normal, but then you get to Dr. Wily who looks uncannily realistic compared to the usual cartoonish look that everyone else has as he gives a creepy glare towards the viewer. It all makes Wily look considerably more threatening and downright scary even than he usually does.
• Mega Man V has Terra, who is the only being to canonically defeat Mega Man. If that wasn't bad enough, the final boss, Sunstar, has no weaknesses and three forms.
• The overly Darker and Edgier Super Adventure Rockman's game over scenes. In the normal one, you watch helplessly as Roll dies, and Mega and Dr. Light hug in their last moments before Wily takes over the world. In the ending you get if you lose to the final boss, Ra Moon, it electrocutes everyone, including Wily, to death.
• Frost Man's ultimate goal in Mega Man 8 is to turn Mega Man into an ice pop (or a Kakigori in the Japanese version) and eat him.
• In Mega Man & Bass, King proves he's not messing around by bisecting Proto Man with an axe.
• Bass's solo ending in Mega Man 2: The Power Fighters. As he mocks Dr. Wily, saying that he must have only created him by accident, Wily states that he's right; Bass was a fluke. He then, with that same eerie calm, reveals a silhouetted Zero, outright telling Bass that he made a special robot to kill all of his enemies — Bass included. Bass retorts by saying that such a "girly-looking robot" has no chance of beating him. Wily just tells him to prepare himself and departs, cackling maniacally. Bass is actually frightened, or at the very least very unnerved, at just how unhinged his creator is becoming. This is emphasized when you remember that, the last time Wily told Bass this, he didn't dare show him the robot in question; he just threw a tantrum like he usually did. The implication here may be that Wily's well aware just what kind of monster he's making here, and just what he was capable of. And he is positively giddy about it.
  • Mega Man's solo ending, where Wily drives him into questioning his motives and existence by calling him a hypocrite who destroys robots to bring peace. He's in such a state of navel-gazing that this is what lets Wily escape.
• Mega Man 8 has the cutscene following the intermission stage. Mega Man and Rush find Wily's latest fortress, but as he drops down to it, he's caught by a humongous robot guardian. Rush tries to help out... and is promptly knocked away, before the robot guard electrifies the hand it's holding Mega Man in, resulting in a scream of pain that is downright horrifying as much as it is annoying. That's not the end of it, however. When Duo saves Mega Man from it and goes up against it himself, his first attack promptly slices half of its face off before turning into a comet and smashing a hole through its body. There's no blood, but it is extremely jarring to see when all the other robot enemies simply exploded into pieces.
• Mega Man 9 has the fact that the game's Robot Masters were still active when Wily finds them in the scrap heap.
• Mega Man 10's Endless Stage music; the echoes in the music sound eerily similar to what happens if Mega Man dies in the games.
• Block Man from Mega Man 11 can be a bit jarring. His nightmarish features come from his second form, a brick monster that has crimson Glowing Eyes of Doom and massive strength, not to mention his entrance having him tear right through his own room's ceiling!
• In Mega Man 7 After defeating Wily, he does his usual begging but this time, Mega Man points his buster at Wily and starts charging, saying that he has enough of his actions and decided to kill him to end the conflict once and for all, with Wily shocked at his sudden change of personality and reminded him that robots cannot harm humans due to the Three-Laws in which, in the English version, Mega Man stated he's more than a robot and was about to do it but still didn't go for it before the castle starts to collapse, and in the Japanese version, after Wily stated the First Law of Robotics to Mega Man, he stopped charging and became silent due to his programming forbidding him from pulling the trigger. This is rather shocking given that Mega Man is kindhearted and wanted peace and it shows that humans like Wily can weasel their way out of trouble.
  • This puts the series in a darker perspective as Wily would later on create his masterpiece, Zero, and centuries of destruction and death happened due to his mere presence until in the end of Mega Man Zero 4 where Zero, in the same situation as in Mega Man 7, Weil taunting Zero if he can kill a human like himself, but this time, Zero said that he never cares about justice and never sees himself as a hero and that he always fought for the people he believes in, and then committed the act of killing a evil monstrous human that is Weil and thus, peace between humans and robots has finally been achieved.

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