Alternate Character Interpretation: Almost all fanart of Metal Man depicts him as a badass, intimidating Robot Master. This is largely due to his appearance being one of the more dynamic MM 2 designs (it probably doesn't hurt that he shares a game with the likes of Air Man, Bubble Man and Wood Man). In the game, however, he's easily the most pathetic boss. The comic reflects this by having him be absurdly weak, even by present-era 20XX standards.
Ironically, this "alternate" depiction is more in-line with the official information regarding Metal Man.
Mega Man: "Thanks, Elecky. I trust you. Don't die, okay?"
Electric Man: "I told you not to call me that. And stop hugging me, I can't look cool if you're hugging me, Rock."
Fridge Brilliance: The explanation for why a robot covered completely in Metool-type armour is not a viable idea.
Heat Man being powered by an unstable nuclear bomb makes perfect sense when you remember that his weapon is called the "Atomic Fire"
Growing the Beard: It started off as a stereotypical sprite comic, and it wasn't until Wily's first attack that it started taking itself seriously. Then the Art Evolution happened...
Hilarious in Hindsight: Dr. Wily trick Dr. Light into designing his floating 'Wilymachine' mech by saying the design is to be used for "mining". Later, in the prelude to the Mega Man 2 story arc, Wily states that one of his new (unseen) robots is for "mining", and that the world will be "Mined. All mined". The plot of Mega Man 3 is about Wily and Light working together on some mining robots, who then go beserk...
Metal Man's upgraded form is named Blade Man. Then Mega Man 10 came along and introduced an actual Blade Man.
Even funnier if a viewer knows some rather obscure Mega Man history. The poorly done and poorly received Mega Man 3 for PC, unrelated to the NES title of the same name, repainted and edited several of the the NES sprite portraits to represent their Robot Masters. The PC version of Blade Man not only predates Mega Man 10's Blade Man by 18 years, but his artwork used, you guessed it, Metal Man's portraits and sprites as a basis. Ferret knows his in jokes.
Lawful Evil: Quintet. John Fodder was initially, more of "Lawful Asshole"(with a Healthy Helping of Dirty Coward). The more we see of him, the worse he gets.