Naw.
Actually there are some glitches like the Ness yo yo glitch. There are somethings like hacks called mods (modifications) which can make the game better like no tripping or example.
No but lots of glitches.
There isn't any just glitches.
no
He's not in super smash brothers brawl but he is a trophy and a sticker
No.
You can cheat if you have the homebrew channel.
No, but I wish there were.
there are not any spikes in brawl but there is something similar called a meteor smash and all that it is is an attack that's shoots you downward
No. The only character from the Metroid franchise playable in Super Smash Brothers Melee or, for that matter, any game in the Super Smash Brothers series up to Super Smash Brothers Brawl is Samus Aran.
No, that doesn't make sense.
no and not on any other system except the wii and possibly any other wii system they might come out with
There are not any cheats to download for Super Mario Brothers: Brawl, however, there are simple Easter eggs such as unlocking music, and easy combos.