Stomp

The Stomp (ストンピング) is a move used by Sonic the Hedgehog that first appeared in Sonic Unleashed. It involves Sonic performing a powerful stomp into the ground to destroy enemies and obstacles.

Description
When performing Stomp, Sonic first goes into midair, whether from jumping or entering midair. He then proceeds to slam directly downwards with one of his feet first, which creates a blue field around him. Once landing on the ground, Sonic releases a destructive shock-wave which damages the nearby surroundings. This is useful for destroying enemies and obstacles, breaking through weak surfaces and activating pressure pads. This move can also help Sonic reach the ground quickly.

Sonic Unleashed
The Stomp first appeared in Sonic Unleashed. In order for Sonic to perform the Stomp in the PS3/Xbox 360 version of the game, he has to possess the upgrade called the Stomping Shoes (In Wii/PS2 version, Sonic starts out with all of the abilities including Stomp). Here, Sonic can perform the Stomp by pressing the /button while airborne. It can be used as a faster way to get to the ground.

Sonic Colors
The Stomp returned in Sonic Colors as one of Sonic's standard moves. He can perform the Stomp while airborne by pressing the B button when just using the Wii Remote, the Z button when using the Wii Remote and Nunchuk and the X button when using the GameCube Remote and the Classic Controller. In the DS version, it is performed (while in midair) by holding down on the d-pad and pressing the jump button (A or B).

Sonic Generations
The Stomp reappeared again in Sonic Generations as one of Modern Sonic's standard moves with identical controls to Sonic Unleashed, while on the 3DS version, Sonic has to obtain the Stomping Shoes before he can use it. If Sonic is equipped with the Skill named Power Stomp, it increases the range of the shock-wave generated by the Stomp, thus allowing Sonic to damage more enemies in the vicinity.

Trivia

 * In Sonic Generations for the 3DS, Tails created the Stomping Shoes. He also mentions that the reason Sonic can stomp with them is because they are lighter than his normal shoes.
 * In Sonic Colors, the Blue Wisp allows Sonic to do a different version of what appears to be the Stomp. When he lands on the ground, nearby enemies will be destroyed.
 * Sonic Colors uses a different animation for the Stomp (where a blue light engulfs Sonic) than in Sonic Unleashed.
 * In Super Smash Bros. Brawl, Sonic's D-Air move resembles the Stomp, but it's slower, goes diagonally, stalls before falling, has no field surrounding the landing, and sometimes doesn't fully activate if Sonic is too high.