HyperSilver
Smash Cadet
So as you noticed with Mac's Up Smash When you land it right in front of someone else you get this Awesome Firey uppercut. that is because Little Mac's Hitboxes on his Smashes have RED SPOTS these red spots are the reason why you get these fire effects. if you pause it During the Attack animation you can see exatly what I'm talking about, it is present in all of his smashes.