Alpha Counter (ゼロカウンター, Zero Kauntaa) is a maneuver first introduced in the Street Fighter Alpha series.
|Street Fighter Alpha series||+ / when blocking|
Alpha Counters are performed by executing a quarter-circle forward motion (specifically a "9-to-6 o' clock" motion) and pressing either kick or punch while blocking; if done properly, the user will block their foe's attack and counter with a predetermined special attack, which will send the opponent spinning to the ground.
In the original Street Fighter Alpha, each character would use either the punch or kick button, depending on the character in question. In Street Fighter Alpha 2 and 3, all characters use both buttons, with one corresponding to high attacks, and the other to low.