Dash Attack

The Dash Attack, also known as the Wario Attack, is a Special Move frequently used by Wario that first appeared in Wario Land: Super Mario Land 3 and has since then appeared in many games featuring Wario, most prominently in the Wario Land series. Its main purpose is to attack enemies, but it can also be used to hit switches or break open treasure chests and Blocks.

Wario's Woods
When Wario performs a Dash Attack, it makes the ceiling fall on Toad.

Wario Land series
The move is a simple attack in these games; it can be used to attack one enemy at a time or to destroy blocks. In Wario Land 3, it can be upgraded to break harder blocks and attack several enemies at once. In Wario Land 4, the Dash Attack (known as Ram within the game) can be performed in two levels of power. The first, standard Dash Attack allows Wario to run faster than ordinary running. It also allows him to break blocks and defeat enemies. But after each block, Wario bounces back against the block. The second type of Dash Attack is known as an S-Ram. The speed Wario runs greatly increases, and he is able to run into multiple blocks and enemies without stopping. He is also able to break the more solid, blue blocks.

Wario World
In this game, the Dash Attack makes Wario take off in a burst of speed when the player presses the Button. This is handy for quickly moving around or barreling through enemies. Another move, coupling a Dash with a Wario Punch, can be executed by pressing, holding, and releasing the Button.

WarioWare series
In the WarioWare games, the attack is used in some microgames, for example to enable Wario to break through walls to escape an avalanche of gold and treasure.

Wario: Master of Disguise
The attack returns in Wario: Master of Disguise, but only Thief Wario can use it. Unlike in past platformers featuring the move, Wario does not rush forward while executing it.

Super Smash Bros. Brawl
The attack appears in Super Smash Bros. Brawl as one of Wario's Smash Attacks. Like in Wario: Master of Disguise, he stays in one spot while executing it (unless in his Wario-Man form).

Trivia

 * Sometimes Wario's Dash Attack doesn't make a Thwomp fall; when Wario's timer is about to end and Wario is doing Dash Attack, it will not affect it on the ceiling.
 * Judging from leftover unused sprites, Roy Koopa was going to use a similar move in Super Princess Peach. He eventually performed this attack in New Super Mario Bros. 2.