Dark Luna
Smash Apprentice
Fixed.I have a strong feeling that Shadow will be in Brawl, however I think he has a higher chance as an Attack Trophy than a Playable Character.
And Knuckles sounds plausable, its almost like gliding was added for him. He can't do the multi jump that
Pit and MetaKnight can, but he can still use the gliding mechanics.
Tails may be, his Up B would probubly close to his flying in the games and would probably use some sort of machine. However he isn't as popular as Knuckles and Shadow, which dose reduce his chances as a Playable Character.
If any of these characters are added, we will be able to do a Mario and Luigi VS Sonic and _Tails_
It's a noob invasion by the looks of it.
What makes you think he isn't as popular as Knuckles or Shadow. In Japan, he is the most popular character besides Sonic.