Tatsumaki Senpukyaku

Tatsumaki Senpukyaku (竜巻旋風脚, Tornado Whirlwind Leg) (or simply Tatsumaki) is Ryu's side special move in Super Smash Bros. Crusade.

Description
When used, Ryu moves forward while rotating like a top, damaging opponents with a spinning crescent kick. The move deals up to three hits, with each hit's damage and knockback determined by when the hitbox connects. It can be used once in midair to provide decent horizontal recovery, as it slows Ryu's descent. However, the move is relatively weak at low percents, though this is compensated by its low ending lag, making it a useful damage-racking option

Shinku Tatsumaki Senpukyaku (EX version)
If both a directional input and the special button are pressed quickly in succession, Ryu instead performs Shinku Tatsumaki Senpukyaku (真空竜巻旋風脚, "Vacuum/True Void Tornado Whirlwind Leg"). This version of Tatsumaki has Ryu utter "Shinku Tatsumaki!" as he rapidly spins in place, dealing multiple hits, with a stronger hit at the end. As it keeps Ryu in place, it does not provide any horizontal movement (with marginal vertical distance), though this is compensated by the move's high knockback and vacuum effect.