Dr. Cossack, humbled by his defeat and his allowing of Dr. Wily to influence his ways, decides to help Dr. Light by providing him and Rockman with tools and weapons to help foil Dr. Wily for good. All seems calm and peaceful, until...
A sudden rampage breaks out, and the cause is found to be a group of robots, led by a mysterious figure. As Dr. Light begins to investigate this rampage and attempts to find a way to stop it, he is kidnapped by the leader of the robots. Rockman hurries to save Dr. Light, but is too late...the only thing he can find at the scene is a yellow scarf...one that almost seems to belong to...Blues!?
Could Rockman's supposed brother, the strange but good-hearted Blues, be the one who kidnapped Dr. Light? Is Blues the one responsible for the rampages? With these questions racing through his mind, Rockman sets off to find Blues and get the answers he wants.
Like the other early Rockman / Mega Man games, the Playstation version was only released in Japan, as part of the Complete Works series.
Apparently, Rockman 5 did a very good job of convincing people that Blues was a bad guy (he isn't, by the way). In fact, it did it so well that when it came out a couple of years later, the Mega Man TV show (produced in the U.S.) decided to makes Blues one of Dr. Wily's assistants as opposed to his normal enigmatic and good hearted self. Also, even though no one bothered to explain it, Dark Man appeared in the old Mega Man animated series that ran in the U.S. Now this begs the question of how could the creators know about Dark Man if they automatically made Protoman/Blues a bad guy? (Play the game to see more clearly what is meant.)
In Japan, you can find a manga adaptation of Rockman 5, which more or less follows the game's story straight through, but is still an entertaining read if you can read Japanese. It was published by the Japanese manga label BomBom, and is apparently a doujinshi (fan manga).
Robot design contest
In nearly every single classic Mega Man game that had Robot Design contests (from Mega Man 2 onward), all of the entries came from male designers. Well, not anymore. Gravity Man was the first (and about only) Wily Robot to be designed by a female. The game credits his designer as Yukiko Mori, definitely a female's name.