The robot master crew is probably the most challenging out of the NES line-up and we see the introduction of some new characters like Dr. Cossack and his daughter

The fanfare for level intros and when you defeat the robot masters are very similar to the corresponding music in MM II.

The setup was the same like the other Mega Man games: choose one stage out of 8 stages, defeat the Robot Master and use the weapon to defeat the next robot and so on and so on

Pharaoh Man is probably the hardest robot master of all six NES games, and has a very powerful weapon.

As laughable as that may sound given how many games there are in the series, it's this same train of thought that makes it a very noticeable and serious problem