Hey guys, it's been a long time since I made a blog, and I came up with the answer of the biggest debate surrounding this game, from the words of none other than Masahiro Sakurai himself
https://www.youtube.com/watch?v=FTt5_0g1ohE
Source: http://www.ign.com/articles/2014/11/19/why-ridley-isnt-playable-in-smash-bros