Volcanic Dunk

Volcanic Dunk is one of the Power Formation manoeuvres used in Sonic Heroes and the Wide Power attack used by Team Sonic. When using this technique, Knuckles the Echidna delivers a tremor-causing punch to the ground with variating effects depending on Knuckles' level.

Description
In order to use Volcanic Dunk, Knuckles must have performed two successive ground-based combo attacks while in Fire Combination. After having performed two ground-based combo attacks, Knuckles jumps slightly into the air, while releasing his teammates from his grib, and then punches into the ground with one fist, with such force that it creates a miniature earthquake that damages anything caught within its radius. To perform this technique in gameplay, the player has to press the Attack button three times in succession.

By collecting red Power Cores during gameplay, the player can increase the power, nature and radius of the Volcanic Dunk: During the battle with Metal Overlord, with his powers amplified by the Super Shield, when Knuckles is performing the Volcanic Dunk, he will begin punching continuously into the air while releasing a fury of powerful fireballs that causes explosions upon contact with the enemy. As long as the attack button is repeatedly pressed, the player can perform this attack for as long as they like.
 * Level 0: Knuckles punches the ground, releasing a small shockwave. No tremors are created and the radius is limited to only extremely nearby enemies.
 * Level 1: Knuckles punches the ground and creates a slight tremor, releasing a slightly bigger shockwave. Radius and damage is slightly increased.
 * Level 2: Knuckles punches the ground, which forms a flaming shockwave and creates a bigger tremor. Radius is increased to about a couple of meters away from the center and damage dealt is about double.
 * Level 3: Knuckles punches the ground, creating a miniature volcanic explosion for a few seconds which makes fire balls come spewing out of the ground. Attack radius and damage is at maximum.