The developers of the game do not own those Intellectual Properties, so they may not have been allowed to use those characters. Also, the developers are limited by time and budget, so they may not have been included due to lack of funds and time.
The Super Smash Brothers game is created by Nintendo which, last time I checked, created Mario and all of the game's characters. There would be no point in creating a game by Nintendo with many Sega characters. If Sega created a game like that, then many Sonic characters and maybe only Mario would be in it.
The answer is simple, really, Sega only allowed one playable character, and one assist trophy and of course stickers and collectable trophies. They did want Knuckles or Tails in the game but because they were only allowed one character, they had to choose Sonic.
Shadow, Eggman as a playable character, Rouge the bat, Gerald Robotnik, The President and his assistant.
Shadow and Knuckles are both the strongest Sonic characters.
The playable characters in Sonic Next Gen are Sonic, Tails, Knuckles, Shadow, Silver, Blaze, Omega, and Rouge. I think that you can also play as Amy too.
There are no additional playable characters in Shadow the Hedgehog. He's all you get. The other characters will join you in each level as a support character, but you don't get to manually control them.
No. Nintendo characters are only allowed in Melee In brawl, Shadow is not a playable character, only an assist trophy.
As in characters? There are 8 players to choose from, Sonic, Tails, Knuckles, Amy, Shadow, Cream, Silver and Blaze, in the multiplayer section, but only Sonic is playable in the main storyline.
Shadow is not a playable character, he is an assist trophy.
shadow is not playable but he is an assist character in the game
Shadow is not a playable character.
no
No he is not a playable character. Shadow is only an assist trophy.
Shadow is not a color, or a playable character.