Board Thread:Speculation, Theories, and Rumors./@comment-25109438-20131223190143/@comment-24516620-20140610034750

I don't think any other sonic character (including Shadow) will ever be in a SSB game (unless Sonic becomes 1st or 2nd party) because Nintendo already licensed SEGA for Sonic and I don't think that they will license another Sonic character, plus SSB is about putting the Nintendo characters together to fight it out, the 3rd parties are just add-ons but Nintendo needs to focus on 1st and 2nd party characters so I think it is unlikely, but if another Sonic character gets added I will be happy, but I will not be sad if they don't make it in. Then again, we all know Sakurai (in case you don't know, the director of SSB) he loves trolling us, while it is nearly impossible, there is a very slim chance for another character but I think before Shadow, Tails and Knuckles would be considered.