In the subspace emissary mode you can attach them to each character's sticker base if you put some on there your characters will recieve special stats from the sticker each will tell you what it does whether its resistance to fire+20 or flame power +20.
700
If you arrange the stickers by size you can see the best stickers first and the weak stickers last.
Go to the unlockables section of the trophies and stickers section. Do what its requirements are and you'll get them.
there is a way without hacking or cheating because i read in the prima offical game guide that you can, but it didnt say how
Play more brawls in group mode and unlock all the characters and collect more trophies and stickers.
You can make a custom level that is all Conveyor Belts going toward a wall, and play in it. (Format is like this) _____________| <--(wall) (conveyors) When you play in it, wait for a bit, battle a bit etc. When stickers fall, they will move towards the wall so you can get them easily.
Sonic is in SSBB.
You can't get tails in SSBB.
rosalina is not a character in ssbb
he is not a playable character in ssbb
No. You cannot get Darkrai in SSBB, even with hacking.
There are no looney tunes characters on SSBB.