Start-up time

Start up time is commonly refferred to as "start up lag." Start up lag is the lag that a character has before the hitbox of an attack comes out to hit the opponent. Fox + Falco's Down B, as well as Jigglypuff's Rest (Down B has the least start up time of any move at 1 frame. 1 frame = 1/60 of a second. The move with the most start up lag in the game is Ganondorf's up tilt.