Helpless refers to the state of which no movement can be made except for horizontal input. It often results from using a recovery move, whether it is horizontal, vertical, or diagonal. A character in helpless state cannot move very far, use any moves, recover, or attack, so it leaves a player vulnerable for attacking. Characters did not enter a helpless state in Super Smash Flash.
Kirby slashes upwards then goes falling down, considering a helpless state. There is a bug that, if the player goes on a platform, sometimes the momentum will make Kirby fall from it in normal helpless (same animation as normal falling).
Sonic stands still while saying: "Ready..." When Sonic charges the move in midair, the move slows the player's descent. There is a sweetspot at the very end of the attack that will have a very powerful effect if the victim is caught in its' range.
Link holds his sword out in front of him and spins around, slashing at anyone who gets too close. When used in the air, Link gains momentum and rises upwards a significant distance while striking multiple times. Link can move freely to the sides during this attack when used in the air.
Naruto performs a Kage Bunshin no Jutsu to summon a clone which he uses as a stepping stool to jump up while swinging a kunai. If the special move button is pressed at the end of the attack, Naruto does a high-knockback kick, which makes for an excellent finisher.
Sora launches himself straight forward and can angle himself up or down. If this move hits an opponent, Sora can chain them in five different ways. It covers good horizontal distance and due it being able to angled up allows it to be used to recover vertically as well.
A ball of electricity emerges from Ness' head. The player loses control of Ness and guides the ball. It can be used as a weak projectile or a way for Ness to recover back to the stage. However, Ness only enters in helpless state if the move is used to recovering.
Tails spins around, emitting a small tornado around him that propels him upwards. Enemies caught in the tornado will suffer some slight damage as Tails goes upwards, except for the very last hit of the tornado, which has some knockback.
Wario spins upwards like a top, while showing the peace sign with his hands, and damages opponents who get hit by him. The attack propels Wario upwards a short distance and can be aimed straight upwards or diagonally left or right.
Wario-Man encapsules himself in a ball with a propeller on its' top lifting him up a significant distance. The ball itself also acts somewhat as a shield to Wario-Man as he is impervious to any damage or flinch. He can interrupt it with an aerial, so that he can use it again.
Peach pulls out her parasol from the Paper Mario series and glides through the sky. The parasol is able to hit enemies multiple times in the air while falling slowly. However, Peach cannot grab ledges if faced to the opposite side of them. She will only be helpless if the move is canceled with a fast fall, although she can recover again by pressing the jump button.
When the spell is launched, a small green ring will appear that the player can move with the arrow keys, the Black Mage will teleport to the ring when the move ends. The longer the special attack button is held, the farther the ring will go, it has also very long range.
Casts a spell that traps the opponent in a series of quick combos with his staff and fists, sending them flying with the last blow. Huge lag if missed. He will only be helpless if he does not reach an opponent to attack.
Pikachu dashes in a maximum of two directions. This move is controlled by the arrow keys. If the opponent is in the path of Pikachu during the attack, the opponent will take 2% of damage with extremely minor knockback. Pikachu's helpless animation is different from his normal falling animation.
Flames gather around Fox, and then Fox is launched into the air while yelling "FIRE!!!" in the chosen direction, dealing flame damage to any opponent that he touches. It can also do damage in its charging stage. His helpless animation is different from his falling animation.
Sheik disappears in an explosion and reappears in another place influenced by the directional keys. During the start up she's granted intangibility frames and in the air can steer left or right slightly and is able to grab the ledge.
Samus spins around like a wheel, which causes her to gain altitude, which deals electric damage on contact. If used on ground, Samus will leap up at a fixed altitude, dragging along the opponents that touches her during the leap.
Meta Knight flips up into the air in a loop, and then begins to glide. He is able to perform a unique glide attack. If he tries to platform-cancel the move, but ends up falling off the platform then he will still become helpless. It also does not allow Meta Knight to glide up when he is using the move.
Meta Knight engulfs himself in his cape. The player can choose the location of his return. Once the player initiate the attack, the player must let go of the special attack button and then hold it. Then, Meta Knight will end the move with a powerful, high endlag attack.
Summons the psynergy hand underneath him that flings him into the air, can be charged and covers a great distance, both vertically and horizontally. He can follow up with one attack, right after being lifted.