Editing Landing lag glitch

In ''Super Smash Bros. Brawl'', the glitch is activated by using specific special moves and the glitch will occur the next time the player goes into a normal or aerial landing animation. Most moves which are affected by the glitch are ones which put an opponent into a helpless although not all moves which cause helplessness cause the glitch and there are a couple of moves which trigger the glitch despite not putting the opponent in a helpless state (such as Kirby’s Hammer and Stone).  

The only way a player can avoid the glitch is by landing using a special move with a landing animation although this is rather risky in most cases. The glitch can be mitigated by using the landing lag from an aerial to override the RCO lag, though with 35-40% more landing lag than would usually get for landing with that aerial (for example, an aerial with 9 frames of landing lag will have 13 frames of landing lag with RCO lag). The player has to land while the aerial has landing lag. If the player [[auto-cancel]]s the aerial, they will get RCO lag. Preferably, one would use an aerial with lag to partially override the glitch, but still suffer more lag than the aerial would normally provide. Naturally, a player will want to use an aerial with lower landing lag as the landing lag will not be as increased as much for an aerial with lower landing lag.

As there is no definitive way to override RCO lag (outside of landing with special moves), it is overall quite exploitable. It can make it considerably more difficult for characters who suffer from the glitch to get off the ledge safely, or to land. Additionally, a slew of additional, normally impossible followups can be performed against characters with RCO, especially against fast fallers. This can be setup with a move with weak vertical knockback, a move with horizontal knockback that lifts the opponent off the ground (but does not put the opponent into [[tumble]]), a meteor smash against an aerial opponent that does not put the opponent into tumble, a multi hit with drag down properties, a throw or an aerial grab release. With the exception of an aerial grab release in certain cases, these setups will put the opponent into their hard landing lag, allowing the player to set up a powerful punish. For example, the first hit of Falco's neutral attack normally lacks any guaranteed followups on its own but if the opponent has RCO, it can lead into a bunch of different moves, including a guaranteed forward smash if the opponent has enough RCO lag.

In ''Super Smash Bros. Ultimate'', RCO lag has been removed for most special moves, making it even less common than in the previous game. However, there are still a few special moves which still suffer from the glitch (including Dolphin Slash, [[Blazer]], Extreme Speed and Drill Rush) and for these few moves which still have RCO lag, the glitch functions like it did in the previous game although aerials no longer have extra landing lag.