Kill all the boses
Beat the subspace emissary.
Either play 400 brawls, beat boss battle mode with fox or falco or beat him in the subspace emissary to unlock him.
To unlock Boss Battle Mode which is located in Stadium in Solo Mode you have to beat the Subspace Emissary.
You have to beat Classic Mode two times with the same character Another way to get toon link is to beat the subspace emissary, then go back to the forest (where you found link and yoshi) and go to the first door in the air (you only find this door after you beat adventure mode (subspace emmisary)) and you fight toon link with the character you entered the door with (make sure you use character your good with). You don`t have to clear the subspace emissary for toon link because today I unlocked him without clearing the subspace emissary.
It will only appear after beating the subspace emissary, after the first mini brawl keep going right until you find the door semi in mid air toon link will appear beat him to unlock him.
Beat the subspace emissary
Beat Subspace Emissary then he appears
After you beat the subspace emissary, you have to go back to the swamp and there is another door there for you somewhere go to the ruins to obtain wolf, after beating subspace emissary.
you have to beat the levels in subspace emissasary also when you do that it is the EASY way to get characters
Complete the Subspace emissary the beat Classic mode on very hard. Or look for the other characters in Subspace Emissary. I suggest you look on Youtube
Beat the subspace emissary when you do sonic is automatically unlocked.
Beat the subspace emissary.
Sonic because sonic beat tabuu in the subspace of emissary and no one else and his final smash is very powerful.
Either play 400 brawls, beat boss battle mode with fox or falco or beat him in the subspace emissary to unlock him.
To unlock Lucario, play 100 brawls, beat Target Smash on all difficulty levels, and get him to join your party in The Subspace Emissary.
To unlock Boss Battle Mode which is located in Stadium in Solo Mode you have to beat the Subspace Emissary.
play subspace emissary and go through every door there is. you fight every one and unlock them if you beat them. well not every one but you meet everyone in subspace.