Mega Man 1/YMMV


 * Breather Boss: Bomb Man and Cut Man are both this. Their stages are probably the easiest in the game, and both aren't hard to read unlike the more unpredictable bosses (Looking at you, Elec Man!) Cut Man's weapon can be easily avoided, and Bomb Man actually follows a pattern by tossing easy to avoid bombs three times before jumping.
 * Ensemble Darkhorse: Guts Man is often considered the most iconic Robot Master from this game, if not the entire series. Not surprisingly, many people were pissed that he didn't make it into Dr. Wily's Revenge for the Game Boy (and, by extension, any of the Game Boy games). Heck, his popularity may have contributed to him being a Wily Castle boss in Mega Man 2 (As a tank) and in Mega Man 7 (Heavily modified and still tank-like), as well as a main character in the MegaMan Battle Network series.
 * Cut Man as well, along with Guts Man he's also considered among the most iconic Robot Masters of all time, and is probably remembered fondly for being the Robot Master people usually battle first. It's worth noting that he's appeared as a boss battle in one of the versions of Mega Man 8 as well as a secret boss in Mega Man X8.
 * Fake Difficulty: The game is tough, but a lot of it comes from this.
 * Good Bad Bugs: The famous "Pause Trick" glitch, which allows you to rapidly pause the game while an attack like the Elec Beam is passing through an enemy, allowing them to take multiple bits of damage from the same shot. This is often used by gamers to beat...
 * Polished Port: The Wily Wars rerelease.
 * That One Boss: Yellow Devil, Yellow Devil, YELLOW DEVIL. Many gamers throughout the years have never been able to conquer this infamously tough boss without exploting the "Pause Trick" glitch.
 * Elec Man and Fire Man become this if you fight them without their weaknesses. Elec Man is incredibly spastic and unpredictable, and his weapon the Thunder Beam has huge hitboxes and can kill you with three hits. Fire Man on the other hand simply blasts at you with his weapon constantly. It's incredibly fast and hard to dodge, and comes at you in random intervals.
 * That One Level: Iceman's stage, if you're doing it without the Magnet Beam. There's a large chasm you must cross on Foot Holders, moving platforms that drift back and forth at seemingly random intervals. In addition, they fire at you while this is going on and it's perfectly possible to fall right through one. And then about halfway across, penguins will start to Zerg Rush you. Without the Magnet Beam, it really starts to feel like a Luck-Based Mission.
 * Wily stage 4 is another one, mainly for having an incredibly tough boss rush with Bomb Man, Fire Man, Ice Man, and Guts Man with no way to heal yourself in-between battles.