User blog comment:Omega natsu2/Chapter 373: Let Live Or Let Die, Predictions./@comment-7418318-20140226103129/@comment-7418318-20140226175652

Now that you mention him, Madara did react as if he knew Guy...

And Guy has to be the least memorable manga character I've ever read about. I seem to always forget about him until someone else mentions him, with the one exception being the chapter where he was hit by the gourd.