Helpless

Helpless, also referred to as free fall, refers to the state in Super Smash Flash 2 of which no movement can be made by the player except for horizontal input. It often results from using a recovery move, whether it is horizontal, vertical, or diagonal. A character in a helpless state cannot move very far, use any moves, recover, or attack, so it leaves a player vulnerable for attacking. Note that most moves that send their user into helpless state involve the character ending the move in midair.

Characters were not able to enter a helpless state in the original Super Smash Flash, due to the game's severely limited mechanics.