As you may or may not know, different special moves in Brawl have strange effects on momentum when used while running off the edge of a stage or platform. Most notable of these are Mario's cape and Lucas's PK Thunder. Here are videos showing both. These techniques are done by running toward the edge of any stage or platform and just as you are approaching the edge, but before you step off, using the B move.
http://youtube.com/watch?v=yCkv2A4Oe9s
http://youtube.com/watch?v=Ytvd1mUeQps
After considerable testing I have compiled a list of moves that this is possible with. Not all of these are incredibly useful and work to varying degrees.
After further testing I have also discovered that any sliding or boost B move can be reversed to switch your momentum in the opposite direction. To do this, as you approach the very edge of a platform or stage, press the B move you want and then very quickly slam the analog stick back. The timing differs between B moves and some of them are extremely fast. This works with most B moves from the edge of platforms or stages. It does NOT work with PK Thunder and a few others for some reason. This uses the same general principle of B reversals used in the air to change momentum but is different in that it is done from the very edge of a stage or platform rather than in the air. This means that moves that have different effects when used on the ground rather than in the air will have the ground effect while being used in the air such as the Ice Climbers' down B. In addition, boosted B moves still have the same distance boost from the edge but reversed in the opposite direction.
Both momentum shifts shown in video by Kupo15
http://www.youtube.com/watch?v=16e40V2L6hU
Stop = The B move initially stops all momentum when used on the ground.
Edge Stop = The B move allows the character to slide but forces the character to stop when it reaches the edge of a stage or platform
Slide = The B move will allow the character to slide off of the edge of a platform or stage keeping the intial horizontal momentum from running.
Boost = The B move when used off the edge of a platform or stage increases horizontal momentum sending the character further than he normally would go.
Cancel = The B move cancels entirely, showing the very begining of the move but then not executing it.
Mario
Standard - Slide
Forward - Boost
Down - Edge Stop
Up - Stop
Donkey Kong
Standard - Slide
Forward - Boost
Down - Edge Stop
Up - Slide
Link
Standard - Edge Stop
Forward - Boost
Down - Edge Stop
Up - Cancel/Slide*
Link's Up B will cancel if you charge it and you slide into a ledge but if you begin the move before you slide off will result in a falling Up B
Samus
Standard - Cancel/Slide*
Forward - Cancel/Slide*
Samus's standard and forward B moves will both cancel if the shot has not come out when she hits the edge but will slide if the shot has begun to come out when she has reached the edge.
Down - Stop
Up - Stop
Kirby
Standard - Edge Stop
Forward - Cancel
Down - Edge Stop
Up - Stop
Fox
Standard -Edge Stop
Forward - Slide*
Sliding Fox's Forward B will sometimes cause him to move down a little before using it. I don't know why.
Down - Slide
Up - Boost
Pikachu
Standard - Edge Stop
Forward - Stop
Down - Boost
Up - Stop
Marth
Standard - Edge Stop
Forward - Slide*
Sliding Marth's Forward B will sometimes cause him to move up a little and other times won't. It seems to move him up slightly more than just using forward B in the air. I don't know why.
Down - Stop
Up - Stop
Mr. Game and Watch
Standard - Slide
Forward - Boost
Down - Boost
Up - Stop
Luigi
Standard - Slide
Forward - Slide
Down - Slide
Up - Stop
Diddy
Standard - Edge Stop
Forward - Stop
Down - Boost
Up - Edge Stop
Sheik
Standard - Boost
Forward - Stop
Down - Slide
Up - Boost
Zelda
Standard - Slide
Forward - Slide*
Zelda's Forward B while used in the air automatically makes her float a little bit. I can only assume that is what is happening here rather than a boost.
Down - Slide
Up - Stop
Pit
Standard - Slide
Forward - Slide
Down - Slide
Up - Cancel
Metaknight
Standard - Slide
Forward - Stop
Down - Slide
Up - Stop
Falco
Standard - Edge Stop
Forward - Slide
Down - Slide
Up - Boost
Squirtle
Standard - Stop
Forward - Slide
Down - Stop
Up - Stop
Ivysaur
Standard - Edge Stop
Forward - Slide
Down - Stop
Up - Edge Stop
Charizard
Standard - Stop
Forward - Edge Stop
Down - Stop
Up - Stop
Ike
Standard - Edge Stop
Forward - Edge Stop
Down - Edge Stop
Up - Stop
Snake
Standard - Edge Stop/Slide*
Snake's Standard B move will stop at the edge if he is still holding the grenade but will continue sliding if he is in the process of throwing it.
Forward - Slide
Down - Edge Stop/Slide*
Snake's Down B move will stop at the edge if he has not yet layed a C4 but will continue sliding if he's is activating the C4.
Up - Stop
Peach
Standard - Slide
Forward - Boost
Down - Slide
Up - Stop
Yoshi
Standard - Boost
Forward - Stop
Down - Stop
Up - Slide*
Increased forward motion I assume is due to the properties of Yoshi's Up B rather than the abnormal boost of other B moves.
Ganondorf
Standard - Stop
Forward - Stop
Down - Slide
Up - Slide
Ice Climbers
Standard - Cancel
Forward - Slide
Down - Slide
Up - Slide
King Dedede
Standard - Stop
Forward - Edge Stop
Down - Slide/Edge Stop*
If Dedede is in the process of charging the hammer he will continue sliding but if in the process of swinging will stop at the edge.
Up - Slide
Wolf
Standard - Edge Stop
Forward - Slide*
Wolf's Forward B if used while sliding off an edge will cause him to go down a little before starting the move in the same manner as Fox's. I don't know why.
Down -Slide
Up - Boost
Lucario
Standard - Edge Stop
Forward - Edge Stop
Down - Stop
Up - Slide
Ness
Standard - Slide
Forward - Cancel
Down - Slide
Up - Slide
Sonic
Standard - Stop
Forward - Stop
Down - Edge Stop
Up - Stop
Bowser
Standard - Edge Stop
Forward - Cancel
Down - Stop
Up - Slide*
As in Yoshi's case I assume the horizontal increase is due to the properties of the move rather than a boost.
Wario
Standard - Slide (falls immediately)
Forward - Stop/ Slide*
If the Bike is available Wario stops to jump on but if it's missing he slides.
Down - Slide
Up - Stop
Toon Link
Standard - Edge Stop
Forward - Boost
Down - Edge Stop
Up - Cancel/Slide*
See Link's Up B
ROB
Standard - Edge Stop
Forward - Edge Stop
Down - Stop
Up - Stop
Olimar
Standard - Slide
Forward - Slide
Down - Slide
Up - Slide
Captain Falcon
Standard - Stop
Forward - Stop
Down - Slide
Up - Slide
Jigglypuff
Standard - Stop
Forward - Stop
Down - Edge Stop
Up - Edge Stop
Lucas
Standard - Boost
Forward - Stop
Down - Slide
Up - Boost
Zero Suit Samus
Standard - Edge Stop
Forward - Edge Stop
Down - Stop
Up - Edge Stop
If you have any questions or notice any errors, leave a post and I'll respond when I have a chance. Keep in mind that the timings on some of these are difficult. Also note that some characters have very little sliding distance and that the effects may not be noticable unless done on ice.
http://youtube.com/watch?v=yCkv2A4Oe9s
http://youtube.com/watch?v=Ytvd1mUeQps
After considerable testing I have compiled a list of moves that this is possible with. Not all of these are incredibly useful and work to varying degrees.
After further testing I have also discovered that any sliding or boost B move can be reversed to switch your momentum in the opposite direction. To do this, as you approach the very edge of a platform or stage, press the B move you want and then very quickly slam the analog stick back. The timing differs between B moves and some of them are extremely fast. This works with most B moves from the edge of platforms or stages. It does NOT work with PK Thunder and a few others for some reason. This uses the same general principle of B reversals used in the air to change momentum but is different in that it is done from the very edge of a stage or platform rather than in the air. This means that moves that have different effects when used on the ground rather than in the air will have the ground effect while being used in the air such as the Ice Climbers' down B. In addition, boosted B moves still have the same distance boost from the edge but reversed in the opposite direction.
Both momentum shifts shown in video by Kupo15
http://www.youtube.com/watch?v=16e40V2L6hU
Stop = The B move initially stops all momentum when used on the ground.
Edge Stop = The B move allows the character to slide but forces the character to stop when it reaches the edge of a stage or platform
Slide = The B move will allow the character to slide off of the edge of a platform or stage keeping the intial horizontal momentum from running.
Boost = The B move when used off the edge of a platform or stage increases horizontal momentum sending the character further than he normally would go.
Cancel = The B move cancels entirely, showing the very begining of the move but then not executing it.
Mario
Standard - Slide
Forward - Boost
Down - Edge Stop
Up - Stop
Donkey Kong
Standard - Slide
Forward - Boost
Down - Edge Stop
Up - Slide
Link
Standard - Edge Stop
Forward - Boost
Down - Edge Stop
Up - Cancel/Slide*
Link's Up B will cancel if you charge it and you slide into a ledge but if you begin the move before you slide off will result in a falling Up B
Samus
Standard - Cancel/Slide*
Forward - Cancel/Slide*
Samus's standard and forward B moves will both cancel if the shot has not come out when she hits the edge but will slide if the shot has begun to come out when she has reached the edge.
Down - Stop
Up - Stop
Kirby
Standard - Edge Stop
Forward - Cancel
Down - Edge Stop
Up - Stop
Fox
Standard -Edge Stop
Forward - Slide*
Sliding Fox's Forward B will sometimes cause him to move down a little before using it. I don't know why.
Down - Slide
Up - Boost
Pikachu
Standard - Edge Stop
Forward - Stop
Down - Boost
Up - Stop
Marth
Standard - Edge Stop
Forward - Slide*
Sliding Marth's Forward B will sometimes cause him to move up a little and other times won't. It seems to move him up slightly more than just using forward B in the air. I don't know why.
Down - Stop
Up - Stop
Mr. Game and Watch
Standard - Slide
Forward - Boost
Down - Boost
Up - Stop
Luigi
Standard - Slide
Forward - Slide
Down - Slide
Up - Stop
Diddy
Standard - Edge Stop
Forward - Stop
Down - Boost
Up - Edge Stop
Sheik
Standard - Boost
Forward - Stop
Down - Slide
Up - Boost
Zelda
Standard - Slide
Forward - Slide*
Zelda's Forward B while used in the air automatically makes her float a little bit. I can only assume that is what is happening here rather than a boost.
Down - Slide
Up - Stop
Pit
Standard - Slide
Forward - Slide
Down - Slide
Up - Cancel
Metaknight
Standard - Slide
Forward - Stop
Down - Slide
Up - Stop
Falco
Standard - Edge Stop
Forward - Slide
Down - Slide
Up - Boost
Squirtle
Standard - Stop
Forward - Slide
Down - Stop
Up - Stop
Ivysaur
Standard - Edge Stop
Forward - Slide
Down - Stop
Up - Edge Stop
Charizard
Standard - Stop
Forward - Edge Stop
Down - Stop
Up - Stop
Ike
Standard - Edge Stop
Forward - Edge Stop
Down - Edge Stop
Up - Stop
Snake
Standard - Edge Stop/Slide*
Snake's Standard B move will stop at the edge if he is still holding the grenade but will continue sliding if he is in the process of throwing it.
Forward - Slide
Down - Edge Stop/Slide*
Snake's Down B move will stop at the edge if he has not yet layed a C4 but will continue sliding if he's is activating the C4.
Up - Stop
Peach
Standard - Slide
Forward - Boost
Down - Slide
Up - Stop
Yoshi
Standard - Boost
Forward - Stop
Down - Stop
Up - Slide*
Increased forward motion I assume is due to the properties of Yoshi's Up B rather than the abnormal boost of other B moves.
Ganondorf
Standard - Stop
Forward - Stop
Down - Slide
Up - Slide
Ice Climbers
Standard - Cancel
Forward - Slide
Down - Slide
Up - Slide
King Dedede
Standard - Stop
Forward - Edge Stop
Down - Slide/Edge Stop*
If Dedede is in the process of charging the hammer he will continue sliding but if in the process of swinging will stop at the edge.
Up - Slide
Wolf
Standard - Edge Stop
Forward - Slide*
Wolf's Forward B if used while sliding off an edge will cause him to go down a little before starting the move in the same manner as Fox's. I don't know why.
Down -Slide
Up - Boost
Lucario
Standard - Edge Stop
Forward - Edge Stop
Down - Stop
Up - Slide
Ness
Standard - Slide
Forward - Cancel
Down - Slide
Up - Slide
Sonic
Standard - Stop
Forward - Stop
Down - Edge Stop
Up - Stop
Bowser
Standard - Edge Stop
Forward - Cancel
Down - Stop
Up - Slide*
As in Yoshi's case I assume the horizontal increase is due to the properties of the move rather than a boost.
Wario
Standard - Slide (falls immediately)
Forward - Stop/ Slide*
If the Bike is available Wario stops to jump on but if it's missing he slides.
Down - Slide
Up - Stop
Toon Link
Standard - Edge Stop
Forward - Boost
Down - Edge Stop
Up - Cancel/Slide*
See Link's Up B
ROB
Standard - Edge Stop
Forward - Edge Stop
Down - Stop
Up - Stop
Olimar
Standard - Slide
Forward - Slide
Down - Slide
Up - Slide
Captain Falcon
Standard - Stop
Forward - Stop
Down - Slide
Up - Slide
Jigglypuff
Standard - Stop
Forward - Stop
Down - Edge Stop
Up - Edge Stop
Lucas
Standard - Boost
Forward - Stop
Down - Slide
Up - Boost
Zero Suit Samus
Standard - Edge Stop
Forward - Edge Stop
Down - Stop
Up - Edge Stop
If you have any questions or notice any errors, leave a post and I'll respond when I have a chance. Keep in mind that the timings on some of these are difficult. Also note that some characters have very little sliding distance and that the effects may not be noticable unless done on ice.