Shippuuga

"S.M. button while dashing. You can execute a powerful dash blade attack. Approach your enemy with Shippuuga and perform a combo!"

- In-game text

Shippuuga, or Shippūga (疾風牙), also known as "Hurricane Fang", is the special technique that Zero learns after defeating Slash Beast in Mega Man X4. 

Trivia

 * In Tatsunoko vs. Capcom, compared to the Sentsuizan, the Shipuuga acted a command move instead of a special. The reason for this is unknown. The possibly of this could be the command issues, though QCB + A was left open for a possible command instead of F + H, so that way it could be a ground version of Sentsuizan. Another possibly of this could be that the move did not seem to be unqiue enough, due to its main use of "combos" in the original Mega Man X4. So it's possible the move was to be more presented to be more of its original form in the aforementioned Mega Man X game.
 * In the Mega Man X4 description, it is misspelled Sippuuga.

Similar Techniques

 * W-Shredder from Mega Man X5
 * Sentsuizan from Mega Man X6

Counterpart to this Technique

 * Twin Slasher