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Finish the Halberd Bridge Area in the Subspace Emissary to unlock Mr Game and Watch.
Finishing the Subspace Emissary mode 100% gives you all characters. There are other ways to unlock certain characters, but the simple version is above.
It is not possible in the first game, but in SSB Melee, you have to do a 100-man melee in in Brawl Subspace Emissary.
There are a couple of ways: Do 350 matches of brawls, then fight Jigglypuff and win in a brawl Complete the Subspace Emissary, then complete Classic with any character (someone told me except Ike) Complete Subspace Emissary, then events #1-#20, then fight and beat Jigglypuff in a brawl Complete Subspace Emissary, then go on the stage "The Swamp" again. There will be a door (quiite late on) in there which leads to a brawl with Jigglypuff in Pokemon Stadium 2. Win, and you unlock Jigglypuff, and also add her to your Subspace Emissary Team.
Go back and complete the stages that have green flags on them. Those are the ones that still have neat trophies and stickers in hidden rooms. Check walkthroughs to find the hidden rooms and make sure you don't get totally killed otherwise you lose everything. I guarantee that if you get everything from the hidden rooms and finish the stage the green flag will be gone and your percentage will go higher. I completed 100% on Subspace Emissary doing that so you need to get 100% for the game to be officially completed.
You can only have 1 saved data for the actual game however you can make many Subspace Emissary Files you can see how many when you start the mode.
The easiest way to get Mr. Game & Watch is to play through Subspace Emissary until he joins you. Then exit to the main menu & he should challenge you.
Unlock every character. (The easiest way to do THAT is to simply beat the Subspace Emissary on Very Easy) For specific info on absolutely everything in this game, just go to the site made by it's creator: www.smashbros.com
As in a team from the subspace emissary or a team that you can make in team battle? Well here's a good team: Captain Falcon, Meta Knight, Mr Game and Watch, Sonic. The subspace emissary pits random characters into teams the best would be the Ike, Marth and Meta Knight team along with the Meta Knight, Lucario and Snake team.
Do one of the following: ● Beat Sonic after beating Classic mode with 10 different characters. ● Beat Sonic after playing in brawls for 10 hours. ( This is the easiest way, just leave the game on over night and battle him in the morning ) ● Have Sonic join you in The Subspace Emissary. ● Beat Sonic after playing 300 brawls. ● Play the Subspace Emissary and get to the final boss in the game, Tabuu. you will have to beat Tabuu in order to unlock him.
Play 300 brawls, beat the subspace emissary mode after he joins your team save the game and quit and he will be unlocked if you chose the brawls you have to beat him to to unlock him.
To unlock all the movies on brawl you need at least two subspace emissary files to do this, okay when you get to petey piranha you need to save one of two princesses either peach or Zelda save Zelda first then beat the whole subspace emissary you will unlock most of the movies now start the other file and save peach instead when you finish the emissary again you should have all the movies if not this means you have not unlocked toon link, wolf, and jigglypuff in the subspace emissary. Return to the forest, swamp and ruins stage after beating the emissary and find a red door that was never there before inside is toon link, jigglypuff and wolf defeat each to recruit them on your team save your game then quit you should receive a notice saying you unlocked all the movies.