The neutral aerial (abbreviated as "nair", "Nair", "n-air" or "ANA") is an aerial attack that is performed in midair by pressing the A Button, and no direction on the control stick. Its official term varies between titles, where it is known as a "Standard Midair Attack" in Super Smash Bros. Melee, and a "Standard Air Attack" in Brawl. Most characters' neutral aerials are fast, high-range moves useful for bettering other air attacks. Many neutral aerials are also sex kicks. With T-Sticking, one is able to do neutral aerials without losing any horizontal momentum. Most Nairs have no landing lag if the player lands whilst the Nair is still being performed.
Captain Falcon's neutral aerial is very useful in comboing because its two kicks and its knockback give Falcon the spacing and timing needed to continue with another aerial attack.
Samus' sex kick lasts a long time, combos efficiently and is generally considered one of the best aerial attacks in the game.
Mewtwo's neutral aerial is an electrical spark field with good knockback and a quick start-up, aiding in its safe recovery.
Link's sex kick has high range, combos effectively and can be interrupted before its hitbox finishes, making it a completely lagless attack.
Luigi's neutral aerial is a sex kick that sends enemies at an upward trajectory.
Marth's neutral aerial makes Marth spin twice hitting any enemy and throwing him horizontally with some upward knockback.
Diddy Kong: A midair cartwheel, strong kick-like properties.
Yoshi: A sex kick. His foot expands, which gives large range.
Wario: Spins and readies himself for a belly flop before pulling out of it. The spin itself does the most damage/knockback and reflects some projectiles.
R.O.B.: Pauses for a second, then fires his boosters as he spins vertically. Massive priority.
Kirby: Spins in the air with feet and arms sticking out. Awful range, poor power and a huge amount of ending lag in the air, and quite sluggish; sometimes considered the worst move in his arsenal.
Meta Knight: Spins with his sword jutting out. High knockback, can hit twice for 19% damage (12% for 1 hit).
King Dedede: Moves into a belly flop position. Exactly the same as Wario's, without a spin.
Captain Olimar: Spins with his arms sticking out. Multiple hits, similar to up tilt.
Falco: Swings his arms four times. Can be ground-cancelled with no landing lag to lead into other attacks.
Wolf: Similar to Sonic's. Curls up and spins around. Has sex kick attributes, but the hits after the first few frames do weak multi-hit damage instead of simply being weaker. Long duration, useful for damage racking. A good filler move in combos.
Captain Falcon: 2 kicks, one after the other. First kick usually leads into second, very strong kick.
Pikachu: Spins around in a ball in midair. Similar in effect to Meta Knight's.
Squirtle: Spins in shell with water circling. The water isn't a hitbox at all. Has properties of a sex kick.