Senpūkyaku

Senpūkyaku (旋風脚) is the technique Zero and Layer obtain after defeating Dark Mantis in Mega Man X8. With the K Knuckle equipped, Zero performs an airborne spinning kick attack that can be directioned downward and diagonally down. If no button is pressed, the user will stay in the air for a short period before moving down.

Trivia

 * Like the Shouryuuken, this technique is based on a move from the Street Fighter series, the Tatsumaki Senpukyaku. There also exists a minor technique/version in the form of a command normal/unique move also called the "Senpuukyaku", used by not only Ryu, but Akuma/Gouki, Yun and Yang (the latter two's versions are radically different attacks however). The one that Zero and Layer perform is that of Akuma/Gouki's in which that one is dark aura based, but the latter's has also been shown to be capable of electrical damage as well.
 * In fact, Zero and Layer occasionally call out the name "Tatsumaki Senpukyaku" when using the technique, much like Ryu and Ken in the Street Fighter games.
 * Rasetsusen's glitch also works with the Senpuukyaku.