This doesn't really need any more description, right? It's the same as MegaMan Riddles, but for every game ever made by Capcom. Your riddle can be a character, game, series, item, you name it.
"Why make this?" you ask? Because I felt like it... Okay, here we go.
My name demands respect
Knives and spears my kicks deflect
A shining star in darkened times
A fist of lightning, fire, and justice
One round down with eight to go
Who am I?