yes you can texture hack by a SD card and then you could hack in Super Smash Bros Brawl
You cant get lugia unless you "texture hack" characters.
No, Pichu is not a playable character in Super Smash Bros Brawl
No but with texture hacks you can replace a character and make them look like Tails.
Shadow is not a character in Super Smash Bros Brawl, unfortunately.
Midna is not a playable character in Super Smash Bros Brawl
What character?
No, Jack Skellington is not a playable character in Super Smash Bros. Brawl.
Dark super Sonic is not a character in Super Smash Bros Brawl.
mewtwo is not in super smash bros. brawl however mew is a trophy character
There is not playable character called Jet in Super Smash Bros Brawl.
Groudon is in Super Smash Bros. Brawl as a Poke Ballsummon, but not as a playable character.
Nope. Toad is not a playable character in Super Smash Bros. Brawl. Hope that helps.