Mega Man Powered Up/Cut Man

Boss: Cut Man
Stun weapons: Mega Buster (charged), Super Arm, Proto Strike

Like in the first game, Cut Man will constantly jump around the room and throw his Rolling Cutter at you. He will either throw it or will stand still, say "Cutting it up!" and then throw it. On Normal and Hard Cut Man also has a special attack where his cutter grows and covers a big area. On Normal he uses this attack after his health drops below half and he throws the cutter once. On Hard this attack can be used anytime, the cutter moves faster and Cut Man throws it twice.

Cut Man's weakness is Super Arm. The room has 2 Guts Blocks, which you can pick up with Mega Man. If you don't have the Super Arm, use your Mega Buster. You can defeat Cut Man with his weakness only when playing as Guts Man. You can also trap him using your Guts Blocks. Keep in mind though that Cut Man's special attack can destroy them.

Bomb Man: Bomb Man is weak to Rolling Cutter. In battles like this, your attacks will deal only 1 damage to the boss, but he will deal great damage to you (also watch out for contact damage). Don't throw bombs aimlessly. After Cut Man jumps over you, turn around and slam the bomb at him. Also be aware of the big cutter, because it will cost you tons of health.

Oil Man: Just like with Bomb Man, after Cut Man jumps over you, turn around and shoot oil. Don't try to crash into him with the Oil Slider.