Mega Man Powered Up/Cut Man

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

Cutman constantly jumps so you shouldn't get confused. If you run toward him, he will jump over you. So you shouldn't hesitate or he'll land on you. After you run toward him and he jumps over you, turn back and run toward him again and he'll jump over you again. You also have to attack while doing this.

But after a couple of times he won't jump and will stay to throw cutter at you. So you have to be on guard and ready if he suddenly stays. Mostly it won't be a problem if you get ready after three or two jumps. When he throws a cutter don't run away from it since it's useless. Instead, jump over it and run toward Cutman. Cutman will as usual jump over you and the cutter won't come back to you again because Cutman will be already behind you.

Cutman's special attack is that he throws a giant cutter at you. You will understand when he wants to do it because he is going to stay and say "Cutting it up!" while shining and being invincible. You have to stay on the side and as he throws it, jump over it, then Immediately change your direction and run behind the cutter and move back to your previous position. In hard mode, Cutman's going to do it two times in a row each time. So be ready.

Mega Man: If playing on normal or easy mode, use the Guts Blocks first and then use buster canon but if you're on hard mode just use buster canon.

Bombman: Rolling cutter is Bombman's weakness so you have to be careful in this boss battle when playing as Bombman. Don't throw bombs aimlessly, each time after you run toward Cutman and he jumps over you, turn back and slam a bomb at him. And be careful with the big cutter because it's going to cost you a lot of health.

Oilman: Just like Bombman, as Cutman jumps over you, turn back and shoot oil at him.