Sidestepping

Sidestepping (also known as sidestep dodging, spot dodging, ground dodging, or simply dodging) is a mechanic in the  games and in Super Smash Flash 2 that renders the character invincible for a small amount of time. Functionally similar to an air dodge, it is performed by pressing down while shielding, and can be employed to evade any and all harm of short duration. It is perhaps most useful in dodging projectiles and items along with quickly counter-attacking foes during the ending lag of their missed attack.