While charging such an attack on the ground, players can cancel the charge and (usually) store it by pressing a shield or grab button, or tapping sideways on the Control stick or D-pad to roll out of the charge. If they are in the air while in their charging state, canceling it with a shield or grab button will make them cancel it with an air dodge instead.
Due to its buffer system, charge-canceling Giant Punch in Brawl will result in Donkey Kong performing an air dodge if the input is entered late into the charge animation.
List of moves that can be charge-canceled
Samus and Mii Gunner are the only characters who cannot charge cancel in midair, since Charge Shot and Charge Blast cannot be charged in midair. Both Mewtwo and Lucario's auto-charge specials are also the only ones who continue charging at max charge unless canceled or fired during that period, as opposed to automatically stopping like everyone else.
In Super Smash Bros. 4, fully completing the charge of any of these specials will briefly display glowing stars on the character's eyes in their battle portrait. In the case of Miis, the glowing stars will appear on their arms.