This technique is done by running toward an ledge of a stage or platform and just before leaving the edge, using Lucas's Up B. If done correctly, Lucas's pk thunder will come out at the point at which Up B was pressed but Lucas will keep his forward momentum, sliding off the edge. The pk thunder can then be aimed down and toward Lucas to hit him faster and at different angles than normal because Lucas has moved closer to it. The timing that you press Up B and distance from the ledge will affect where pk thunder will send you.
Video: http://www.youtube.com/watch?v=Ytvd1mUeQps
Special thanks to Seanson for creating the first video of this
The following is a list of known trajectories/effects in order of timing (closest to the edge to furthest from the edge.) These will be explained in reference to Battlefield because the most options are open on this stage and it is commonly used competitively. Note that 2nd level platform refers to the top platform in the middle and 1st level platforms refers to the 2 on the left and right.
Options from the 2nd level platform
1. PK Faceplant
Lucas is hit immediately down and back diagonally into the 1st level platform. He is knocked down as if hit by an attack.
Application: From this you can use any normal get-up move including flex kicks. Not the most useful of options but not useless either.
2. PK Thunder Cancel
Lucas is hit down and back diagonally and hits the very edge of the 1st level platform. This cancels PKT2 allowing him to use any move. He continues to sparkle for a second or two as well. You will start from this just barely in the air.
Application: I find this to be most useful of the techniques because it is very difficult to predict and can be followed up by literally any move. I have found pk fire and fair to be most useful.
3. PK Thunder Platform Ricochet
Lucas hits the 1st level platform and ricochets horizontally onto around the center of the 1st level platform on the other side.
Application: Useful as a surprise attack.
4.PK Thunder Stage Ricochet
Lucas is hit down and back diagonally at a shallower angle sending him down onto the stage and sliding along it following the curvature of the stage.
Application: Similar to PK Thunder Platform Ricochet
5. Shallow Angle PK ThunderU]
Lucas is hit down and back diagonally at a shallow angle that can be adjusted with precise timing. He will not ricochet off anything and will go through the first level platform if he hits it.
Application: Useful as surprise attack.
6.Reverse PK Thunder
Lucas is hit directly backward horizontally. It is a bit slower than some of the others.
Application: Very handy for retreating. Hard to predict.
7. Regular Sliding PK Thunder
Lucas hits himself with the PK Thunder at a speed about the same of just hitting yourself from on the platform. It sends him in upward directions.
Application: Not terribly useful. Just as vulnerable as sitting on the platform and using it. This is most often a mistake.
Options from the 1st Level Platforms
PK Faceplant, PK Thunder Stage Ricochet, Reverse PK Thunder and Regular Sliding PK Thunder are all possible on the 1st level platforms as well.
8. PK Thunder Edgehog
When the technique is used running off the 1st level platform toward the edge of the stage Lucas can be shot directly to the edge and grab it. IMPORTANT: With a slightly different timing he will not grab the ledge and you will die. In addition due to strange brawl conditions, if this technique is used on the right side of the stage Lucas will sometimes bounce in strange directions including up and back from the direction you came, up and away from the direction you came, and away and down to your death. The timing for these is difficult to control and often results in death. Other times he will grab the edge and be fine.
Application: A fast edgehog that can be very unexpected. Use with extreme caution. There are many ways you can kill yourself with this.
Options from the ledge
Reverse PK Thunder, Regular Sliding PK Thunder and PK Thunder Edgehog (with a different timing) are all still possible from the ledge. In addition you can send yourself rocketing down and beneath the stage but I can't see any possible application for this except a flashy suicide kill possibly.
Properties
When the technique is used correctly, there is only a very small window of time that Lucas is vulnerable to attack. As soon as the thunder comes out Lucas will be inside the tail of it. This means that if enemies get too close to Lucas while the technique is begining they will be hit away by the tail of the thunder. However, if Lucas is hit with an attack with priority equal to or greater than the pk thunder, the move will be cancelled. Lucas will not take damage from this but will be sent into his falling animation which is the same as if he jumped and hit his pk thunder into a solid stage object. The lag from this is enough to be punished. This can be avoided by not using the technique when the enemy is too close to you. In addition be aware that it can also be interrupted by enemy projectiles.
Video: http://www.youtube.com/watch?v=Ytvd1mUeQps
Special thanks to Seanson for creating the first video of this
The following is a list of known trajectories/effects in order of timing (closest to the edge to furthest from the edge.) These will be explained in reference to Battlefield because the most options are open on this stage and it is commonly used competitively. Note that 2nd level platform refers to the top platform in the middle and 1st level platforms refers to the 2 on the left and right.
Options from the 2nd level platform
1. PK Faceplant
Lucas is hit immediately down and back diagonally into the 1st level platform. He is knocked down as if hit by an attack.
Application: From this you can use any normal get-up move including flex kicks. Not the most useful of options but not useless either.
2. PK Thunder Cancel
Lucas is hit down and back diagonally and hits the very edge of the 1st level platform. This cancels PKT2 allowing him to use any move. He continues to sparkle for a second or two as well. You will start from this just barely in the air.
Application: I find this to be most useful of the techniques because it is very difficult to predict and can be followed up by literally any move. I have found pk fire and fair to be most useful.
3. PK Thunder Platform Ricochet
Lucas hits the 1st level platform and ricochets horizontally onto around the center of the 1st level platform on the other side.
Application: Useful as a surprise attack.
4.PK Thunder Stage Ricochet
Lucas is hit down and back diagonally at a shallower angle sending him down onto the stage and sliding along it following the curvature of the stage.
Application: Similar to PK Thunder Platform Ricochet
5. Shallow Angle PK ThunderU]
Lucas is hit down and back diagonally at a shallow angle that can be adjusted with precise timing. He will not ricochet off anything and will go through the first level platform if he hits it.
Application: Useful as surprise attack.
6.Reverse PK Thunder
Lucas is hit directly backward horizontally. It is a bit slower than some of the others.
Application: Very handy for retreating. Hard to predict.
7. Regular Sliding PK Thunder
Lucas hits himself with the PK Thunder at a speed about the same of just hitting yourself from on the platform. It sends him in upward directions.
Application: Not terribly useful. Just as vulnerable as sitting on the platform and using it. This is most often a mistake.
Options from the 1st Level Platforms
PK Faceplant, PK Thunder Stage Ricochet, Reverse PK Thunder and Regular Sliding PK Thunder are all possible on the 1st level platforms as well.
8. PK Thunder Edgehog
When the technique is used running off the 1st level platform toward the edge of the stage Lucas can be shot directly to the edge and grab it. IMPORTANT: With a slightly different timing he will not grab the ledge and you will die. In addition due to strange brawl conditions, if this technique is used on the right side of the stage Lucas will sometimes bounce in strange directions including up and back from the direction you came, up and away from the direction you came, and away and down to your death. The timing for these is difficult to control and often results in death. Other times he will grab the edge and be fine.
Application: A fast edgehog that can be very unexpected. Use with extreme caution. There are many ways you can kill yourself with this.
Options from the ledge
Reverse PK Thunder, Regular Sliding PK Thunder and PK Thunder Edgehog (with a different timing) are all still possible from the ledge. In addition you can send yourself rocketing down and beneath the stage but I can't see any possible application for this except a flashy suicide kill possibly.
Properties
When the technique is used correctly, there is only a very small window of time that Lucas is vulnerable to attack. As soon as the thunder comes out Lucas will be inside the tail of it. This means that if enemies get too close to Lucas while the technique is begining they will be hit away by the tail of the thunder. However, if Lucas is hit with an attack with priority equal to or greater than the pk thunder, the move will be cancelled. Lucas will not take damage from this but will be sent into his falling animation which is the same as if he jumped and hit his pk thunder into a solid stage object. The lag from this is enough to be punished. This can be avoided by not using the technique when the enemy is too close to you. In addition be aware that it can also be interrupted by enemy projectiles.