Where does everyone get this idea the Bowser boss is a mecha? I always figured it was some sort of false Bowser BODY, which fits with King Boo wanting to possess other people's bodies, and makes blowing his head off a whole lot more intense.

...hm. We're kind of indecisive on where the "MARIO!" shout falls trope-wise. Taunt Button's description says that it's purely atmospheric, which the Mario shout indeed is, but the title of the trope is kinda misleading. I know this should probably be mentioned on the discussion for that page, but it does seem to mostly apply to this situation...

Did that editor see the same western Mario cartoons/comics that I did? Luigi wasn't cowardly, he was the level-headed brother that kept Mario in check.