How do you get all the characters on shadow the hedgehog
There are no hidden characters.
wiki.answers.com/Q/How_do_you_get_all_the_characters_on_shadow_the_hedgehog

Is shadow the hedgehog unlockable as a character
.... what game...?
wiki.answers.com/Q/Is_shadow_the_hedgehog_unlockable_as_a_character

Can shadow the hedgehog be a playable character in ssbb
no
wiki.answers.com/Q/Can_shadow_the_hedgehog_be_a_playable_character_in_ssbb

Why is Shadow the hedgehog a popular sonic character
because he looks cool
wiki.answers.com/Q/Why_is_Shadow_the_hedgehog_a_popular_sonic_character

Is shadow the hedgehog unlockable as a character in ssbb
No but he is a assist trophy
wiki.answers.com/Q/Is_shadow_the_hedgehog_unlockable_as_a_character_in_ssbb

Shadow the Hedgehog (Action Nintendo GameCube Game)
Shadow the Hedgehog Release Date: November 18, 2005 Genre: Action Style: 3D Platform
www.answers.com/topic/shadow-the-hedgehog-action-nintendo-gamecube-game

Shadow the Hedgehog (Action PlayStation 2 Game)
Shadow the Hedgehog Buy Now Release Date: November 15, 2005 Genre: Action Style: 3D Platform
www.answers.com/topic/shadow-the-hedgehog-game

Shadow the Hedgehog (Action Xbox Game)
Shadow the Hedgehog Release Date: November 18, 2005 Genre: Action Style: 3D Platform
www.answers.com/topic/shadow-the-hedgehog-action-xbox-game

Shadow the Hedgehog (Action Nintendo GameCube Game)
Shadow the Hedgehog Buy Now Release Date: November 15, 2005 Genre: Action Style: 3D Platform
www.answers.com/topic/shadow-the-hedgehog-game-1

Shadow the Hedgehog (Action PlayStation 2 Game)
Shadow the Hedgehog Release Date: November 18, 2005 Genre: Action Style: 3D Platform
www.answers.com/topic/shadow-the-hedgehog-action-playstation-2-game