It would be very unlikely. However, there hasn't been any announcement of the next Super Smash Bros. game, so there is no definite answer.
No, there is no way to play as Goku in Super Smash Bros. Brawl
No, Goku is not from Nintendo.
As of March 2014, there was no announcement for Goku being in the Super Smash Bros for Wii U and 3DS.
Goku isn't in the game at all.
No, he will never be in Super Smash Bros., as only characters that originated in video games can be in Super Smash Bros., and he did not originate in video games.
nonono no but win is super smash flash 2 : goku
you hack super smash bros brawl i am not sure how but you do
You don't, because Goku isn't in the game at all. You may want to look at the fan game Super Smash Flash, where Goku is a playable character.
No, Goku is not a playable character. You may be able to hack it, however.
Smash Bros. is a NINTENDO game. Goku and Vader are both totally random characters to put in a Smash Bros. game, and It costs Nintendo money to put characters they haven't made into a game because of copyrighted intellectual property. Short Answer: Hell, No.
No, Godzilla will never be in Super Smash Bros. That is, unless someone hacks him into there, which would probably be virtually impossible.
Geno is not a character in Brawl, many people edit pictures to fool others etc.