Guys. Nintendo took down the leak videos. If it wasn't THEIR PROPERTY, they couldn't take it down!
Seriously people, it's real. Get over it. Yeah, Dr. Mario is stupid and all, but honestly Sakurai probably just thought "why not" since it probably didn't take all that long to create him.
And why are people doubting characters when we have Wii Fit Trainer? Like really? And there is no point in complaining about the roster because -
1. Obviously you'll be sad if your character doesn't get in it (like Ghirahim). But you'll get over it anyway and just play as your other characters you like.
2. It's about the GAMEPLAY, not the characters. If the gameplay is good and there is at least one character I like (which they had that down in the initial E3 2013 roster) then you should be happy.
3. Hating something like Dr. Mario just doesn't make all that much sense, because it's not like it's affecting you directly in any way. (and if he wasn't in the game, you wouldn't have known any different)