Kiai

Kiai (い lit. "fighting spirit") is a ki attack that appears throughout the Dragon Ball franchise.

Overview
Kiai is a technique where the user affects the air currents around them with ki to produce powerful shockwaves in order to strike the opponent.

It can be used to attack or counter some techniques and can be used in different ways, as invisible punches, powerful screams, a shockwave glare (called Kiai Hō, -気合砲- lit. "Fighting Spirit Cannon") or even air explosions coming from the entire body

The blast's power, speed, range, and force vary based on its user; however, there are also variations of the technique that have been shown to have different effects.

Variations

 * Shockwave Fist : An attack where the fist is pumped with tremendous energy, releasing a shockwave.
 * Soaring Fist : A powerful Kiai variant Cole uses, and his variant doesn't always require ki