User blog comment:Tepig921/SSB3DS Leaks Fully Confirmed! My Bionis is Ready!/@comment-24128208-20140825210201

I'm surprised that they added Dr. Mario and Dark Pit because they could have just be alternate costumes but instead, they are playable characters. Speaking of alternate costumes, someone said that the Koopalings would be Bowser Junior's alternate costumes and Sonic would have Metal Sonic as an alternate costume (Metal Sonic was shown to be an alternate costume in a video).