When using this technique, Knuckles either performs a shot charge while delivering a full-powered uppercut or a downward strike with his fist while moving slightly forward. He can also perform this attack in the air by throwing his fist diagonally downwards. This attack deals heavy damage to enemies.
Sonic Boom: Shattered Crystal
The punch first appeared in Sonic Boom: Shattered Crystal as Knuckles' signature offensive move in the game. In gameplay, this attack is powerful enough to instantly defeat enemies that would otherwise require multiple hits to be destroyed. The aerial version of the Punch can also be used for additional vertical movements in midair. To use it in gameplay, the player has to press .
Sonic Boom: Fire & Ice
In Sonic Boom: Fire & Ice, the Punch returned as Knuckles' signature offensive move for the game. However, it does not display same amount of power as in the previous title. To use it in gameplay, the player has to press . When used in the air, the Double Jump can be used again. However, the aerial version of the Punch shares the same limitations as Sonic's Air Dash in that it can only be used twice in a row.