B-reversing refers to the act of performing a special move and changing the direction the character is moving at the same time. This technique is closely related to the turnaround-B and the wavebounce.
Specifics of each technique
B-reversing was first introduced in Super Smash Bros. Brawl. To execute a B-reverse, the player must input a special move, then quickly tap the direction opposite the one they are facing. If performed correctly, their character will do the special move while turning around and reversing their momentum.
This momentum shift happens almost instantly, and is quite useful. For example, Mario can jump away from his opponent, as if to retreat, then B-reverse a Fireball to close distance while landing behind a projectile. Diddy Kong is able to gather lots of momentum with his Monkey Flip, then B-reverse his Peanut Popgun on a moment's notice to avoid or attack his opponent. Even better, the popgun can be cancelled with the shield button, making this an especially flexible movement option. In Brawl, Snake often has to B-reverse with Grenades and C4 to avoid being juggled by opponents after recovering high above the stage.
While Captain Falcon's and Ganondorf's neutral special moves, the Falcon Punch and Warlock Punch respectively, can be B-reversed in a normal fashion, delaying the reverse slightly will cause an animation of them actually turning around to perform the punches. Pulling this off results in even more damage and knockback, but it also slows the attacks down even more. This is a move-specific technique and is not technically a B-reverse, but doing so is typically called a Reverse Falcon or Warlock Punch. In Project M, while Ganondorf's Warlock Punch has been replaced with a reflector/a float, Captain Falcon can reverse his Falcon Punch up to 4 times with proper execution.
This technique, also known as a B-Turnaround or a Turnaround Special, has been present in every Smash Bros. iteration. However, in Super Smash Bros. and Super Smash Bros. Melee, it could only be performed in the air. As of Brawl, characters can now use grounded Turnaround Special moves.
A turnaround-B will cause the character to change the direction they are facing right before starting the special move. While B-reversing requires a direction to be inputted right after a special move, a turnaround-B is done by tapping the direction away from where the character is facing before the special move. In the case where the player wished to do a turnaround neutral special, they must be sure to let the control stick reset to a neutral position before pressing B (or any button mapped to specials).
Turnaround specials are quite common. For example, when a player reverses the direction of their up-special to recover, they are performing a turnaround up-B. In Melee, Falco will often perform a Turnaround-B to shoot a laser at his foe when he retreats with a short hop laser.
In Smash 64, while reverse neutral special moves don't exist, it is possible to turn around while performing a neutral special move by simply tilting the Control Stick left or right, as side specials don't exist in this game.
Performing a wavebounce, sometimes referred to as a recoil special, is actually a matter of performing both a turnaround-B and a B-reverse with the same special move. The result is that the character will change the direction they move, but not the direction they are facing. Wavebouncing is less common than the above two techniques, but it does offer players a unique way to position themselves as they shoot projectiles or space certain attacks.
B-sticking refers to a control scheme that sets the C-stick to input special moves. Some players prefer to use B-sticking to simplify the inputs required to perform B-reverses and wavebounces, among other applications.
B-sticking requires that the player be using the GameCube, Classic, Classic Pro or Wii U Pro Controller or the Wii U GamePad with a custom name. The player must then go in to the Options →Control Settings and change the controls for the controller for their name. The primary change that needs to be made is that the C-Stick must be changed so that instead of performing smashes, it executes specials. This also gives B-sticking its name, since the player is using the C-Stick to perform special moves.
Dashing up special
Similar to how an up smash can be performed out of a dash, but with this setup, an up special can be performed much the same way. To do this, start to dash, and just before reaching the point where the player wants to perform the up special, press back on the joystick and then up on the C-Stick. The character should continue to slide forward and begin to perform their up special. This technique also works with down specials (such as the Luigi Cyclone).
The B-sticking setup can be used to more easily perform a back aerial out of a dash by pressing the C-Stick backwards while running. This will cause the character to turn around and jump while still moving forward.
Characters who greatly benefit
The following characters have a very noticeable recoil on one or more of their specials with practical applications
Other B-sticking videos
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