Not possible without cheating.
Nope. You can fight him, though.
If you mean fight them, yes. If you mean play as them, no.
You can fight Master Hand in boss mode
Do classic and kill Crazy hand. Then kill yourself. Then when Master hand is the only one left, kill him. If that does not work, then you cant unlock him.
No, there is not.
No, the only way you could is with hacks. Same goes with Melee and 64.
You must use an Action Replay Max to hack the game and play as him. There is no other way
You fight the master hand or crazy hand on Stage 12 in Super Smash Bros. Brawl.
yes
he is the left hand who appears with Master Hand on certain conditions in SSBM and SSBB
master hand isn't a playable charachter in ssbb but you can probably get him somehow if you use cheats
Yes he will only appear if you play classic mode on hard mode, very hard mode or intense mode and never use a continue when you get to master hand crazy hand will also be there to beat you.