Mega Man?

Mega Man? is a boss from Mega Man: Powered Up that the player faces when playing with a Robot Master on his own level. He is not the real Mega Man. In the dialogue exchange between the player Robot Master and Mega Man, he will tend to try and pass himself off as Mega Man and convince them to join up with Dr. Wily, frequently using lingo or terms appealing to the particular Robot Master. Most of the Robot Masters see through his façade, but Cut Man seems to be naive to the point where he believes that he is the real Mega Man (though he still does not take the bait to join up with Wily).

Mega Man? attacks by shooting and sliding, and after losing half of his energy, he will also use charged shots, which counts as his super attack. Like all Robot Masters, he is invulnerable during the duration of his super attack while charging his shot, and for a brief moment after he fires. He always fires a single regular shot before he begins charging for his super attack.

Trivia
Oddly enough, he wear's a scarf like Proto Man, though it's voilet & not yellow.