I do, but Sonic is in Brawl, and he didn't appear on Nintendo until Game Cube, IIRC and the same applies to Solid Snake. I am at fault for saying "classic Nintendo" character if the definition of "classic Nintendo" characters are restricted to having been published by Nintendo.
Again, I was only trying to express my surprise that MegaMan, who has been appearing on Nintendo consoles for over two decades, has not been included in Brawl at this point. I have no feelings on whether he should or should not be included, just surprise. And mild surprise at that.