Mega Man 5

Overview
Full Name: Mega Man 5: Brother Against Brother! Japanese Name: Rockman 5: Blues' Trap!?

Mega Man returns home one day to find Proto Man kidnapping Dr. Light! Has Proto Man turned evil? Mega Man set's off to find out what's going on.

Mega Man learns that Dr. Wily cloned Protoman when the real Proto Man escapes, and tells him.

Story
"Cossack to Mega Man! Cossack to Mega Man! Come in, Mega Man!

"Proto Man has gone wild! City Hall and spaceport have been totally destroyed and the cit's power grid is in shambles. I've never see destruction on this scale before!

"I know you're worried about Dr. Light, but your first duty is to free the city from the grip of Proto Man's robots. I can modify your reactor to give the Mega Buster a little more power, but the rest is up to you. Dr. Light and I have been working on a special project, but it's not finished yet. Maybe I can get it working, it might give you an edge.

"Remember to watch your back, Mega Man. Proto Man seems to have become more ruthless than we thought possible. Good Luck!

Cossack Out!"

Robot Masters

 * Star Man
 * Gravity Man
 * Gyro Man
 * Crystal Man
 * Napalm Man
 * Stone Man
 * Charge Man
 * Wave Man