Back Air Attack

The back aerial (abbreviated as "bair", "BAir", "b-air" or "ABA") is an aerial attack that is performed in midair by pressing the A Button, and tilting the control stick in the direction opposite to which the character is facing. Its official term varies between titles, where it is known as a "Back Midair Attack" in Super Smash Bros. Melee, and a "Back Air Attack" in Brawl. The majority of Bairs are kicks.

List of Bairs (SSBB)

 * Mario: A twizzle-kick of sorts, he kicks behind himself with both feet and spins.
 * Luigi: The same as Mario's.
 * Peach: Bashes her bottom backwards.
 * Bowser: Forces his shell backwards.
 * Donkey Kong: A simple backwards kick. Long duration.
 * Diddy Kong: A fast turnaround motion with his leg stuck out.
 * Yoshi: Flips his tail up and down. Lots of damage given if all hits connect.
 * Wario: Falls over in the air. Can be used to fly as Wario-Man.
 * Link: Two backward kicks. Relatively weak.
 * Zelda: The famous Lightning Kick. She jabs her heel behind her giving an extremely powerful initial, electricity-imbued attack for the first hitbox. The second hitbox is very weak. Makes her turn.
 * Sheik: Extends her leg backward very fast. Sweetspot on her foot.
 * Ganondorf: Punches backward. Very similar to Captain Falcon's Bair.
 * Toon Link: Slashes backwards with his sword. It can be chained at low percents and be used as a kill move at higher percents. One of the best combos in the entire game with unbelievable priority. Even more priority than Mr. Game & Watch's Bair.
 * Samus: A backward kick. Sweetspot on her foot.
 * Zero Suit Samus: Identical to Samus', but slightly faster.
 * Pit: Jabs his swords backwards. Good knockback, but hard to land.
 * Ice Climbers: Spin around with hammers slightly extended. Deceivingly strong.
 * R.O.B.: Pushes boosters behind himself. Moves him forward.
 * Kirby: Extends both feet backwards. Used for Fence of Pain. Often considered the best move in Kirby's arsenal by pros.
 * King Dedede: Very similar to Kirby's, but with one foot. It has a large hitbox.
 * Meta Knight: Slashes three times behind himself very quickly, slightly slower/more powerful than his forward aerial, which has the same properties.
 * Olimar: Swings a Pikmin backward.
 * Fox: A standard Bair kick, he spins with his leg outstretched. Horrible ending lag in the air that often causes suicide deaths.
 * Falco: The L&R kick from Melee.
 * Wolf: Jams his leg backwards with a deceiving range.
 * Captain Falcon: Punches behind himself.
 * Pikachu: Spins around for multiple hits.
 * Squirtle: Does an attack similar to Mario's Bair.
 * Ivysaur: Spins around with vines extended. Low damage and very low knockback, but excellent range.
 * Charizard: Spins around surprisingly quickly with tail extended and wings slightly extended. 2 possible hits, one with wings and one with tail. Decent knockback on tail hit, wing hit will always link into tail hit.
 * Lucario: Punches backwards, Aura extends from palm.
 * Jigglypuff: Spins around with foot extended to about twice its regular size. Used for the famous Wall of Pain.
 * Marth: Similar to Toon Link's in animation, Marth thrusts his sword upwards. However, this Bair is notable because it turns him around.
 * Ike: A quick spin with sword extended.
 * Ness: Plugs backwards with both heels. Initial hitbox quite powerful with electrical properties, second hitbox fairly weak, although buffed from Melee. Very Powerful.
 * Lucas: Flips and hooks his foot downward. Can spike at a certain angle (on the tip of Lucas's foot). Can kill at low %s.
 * Mr. Game and Watch: The famous snapping turtle, hits multiple times.
 * Snake: Kicks backward with both feet, body becomes horizontal.
 * Sonic: Similar to Diddy's, he spins around with his foot extended. One of his few KO moves.

Notable characters' back aerials

 * Jigglypuff's back aerial in Super Smash Bros. Melee and Brawl, used for the highly effective "Wall of Pain".
 * R.O.B.'s back aerial can aid his recovery, as his hover pad lets out a quick burst, moving him forward quite alot.
 * Kirby's back aerial in Melee, an attack similar to Jigglypuff's back aerial but instead has no start-up lag. The move is dubbed the "Fence of Pain".
 * Marth, Zelda and Roy's back aerials, which allow them to turn around while still in midair. These are the only aerials able to do so in the Super Smash Bros series.
 * Ness and Zelda's back aerials in Melee, which are powerful semi-spikes. Zelda's back aerial semi-spike can only be achieved from a hit with the sweetspot at her toe.
 * Toon Link's quick back aerial, with minimal knockback in Brawl. The move is effective for positioning the opponent for an immediate down aerial. Has even more priority than Mr. Game & Watch's Bair.
 * Pikachu's back aerial has extremely short range but the hitbox surrounds Pikachu.
 * Mr. Game & Watch's back aerial is the feared Turtle, a five-hit combo with high priority and shield-destroying properties.
 * Lucas's back aerial, the only one in the entire series to meteor smash.