PharaohMan punching MegaMan became so iconic that when the DVD set was re-released in 2014, the punch was put on the back of the case as a preview image.
This show should have had a running joke that Pharaoh Man doesn't have a power, and every time his power was brought up, or he was about to use his power, something would get in the way, or he'd "use his power" completely off camera and leave no evidence of what happened.
On the back of the "Mega Man: The Complete Series" DVD box, the second screenshot actually says "Pharaoh Man is awesome!", showing him punching Mega Man. So, congratulations for making this meme officially part of Mega Man history!