Pac-Man throws a fire hydrant below himself: enemies hit by the falling hydrant take 9% damage. If the hydrant lands on the ground, it will stay in place and shoot out water two times. The direction of the shots depends on Pac-Man's position: if he's above the hydrant, water is shot from the top, pushing characters upwards; otherwise it is shot from both sides, pushing them horizontally. All fighters, including Pac-Man himself, are affected.
The hydrant can also be attacked: once it has taken at least 13% damage (12% before version 1.0.4 of Super Smash Bros. 4), it is launched in the direction of the attack. Characters hit by the thrown hydrant (including Pac-Man if the hydrant was launched by an opponent) take 13% damage and high knockback.
A hydrant dropped on a steep incline will instantly start rolling down it, knocking away opponents and turning the move into a fast and formidable projectile in such circumstances.
If a character uses a smash attack on a fire hydrant and launches it, they will not make any sounds.
If a fire hydrant lands on an opponent then the opponent will be dealt 23.4% damage and above depending on the accuracy of the attack.
Special Move customization was added in Super Smash Bros. 4. These are the variations:
Using the Fire Hydrant on Pac-Land next to one of the stage's pre-existing Fire Hydrants can prevent Pac-Man's own Fire Hydrant from properly falling to the ground; as a result, other characters can get stuck underneath the Hydrant as it constantly "falls", inflicting significant damage to opponents.
In Ultimate, a rare glitch exists where the windbox of the Fire Hydrant can unintentionally launch characters far more than usual.
In the game, Pac-Land, fire hydrants appear as common obstacles. They shoot water that can push Pac-Man away, acting as a hazard should he be pushed towards ghosts.