B button

"B" redirects here. For the move type for which the B button is used for, see Special move.

For the Japanese smasher, B

The B button on various controllers. From left to right, top to bottom: Nintendo 64 controller, GameCube controller, Wii Remote, Classic Controller, Nintendo 3DS, Wii U GamePad, the Joy-Con, and the Switch Pro Controller

The B button is either the large, green button on the Nintendo 64 controller, the small, red button on the Nintendo GameCube controller, the rectangular trigger button on the back of the Wii remote, the clear button towards the bottom right of the Classic Controller, the circular button on the Wii U GamePad, Wii U Pro Controller and Nintendo 3DS (varies in colour on 3DS, matches the colour of the Wii Remote, Wii U GamePad and Wii U Pro Controller), or the bottom dark gray face button on the Nintendo Switch's right Joy-Con and Pro Controller. It is used in all default controller layouts (aside from the horizontal Wii Remote), by themselves or in conjunction with any direction on the control stick, to activate special moves in every game in the series. With the Wii Remote alone, the 1 Button acts as its B button, performing special moves, whereas the actual B button is used to shield the character with default controls. When using Joy-Con (R) as a single Joy-Con held horizontally, the B button will become the left button, acting like a Y button and performing jumps.