The Z-Axis Glitch is a glitch in Super Smash Bros. Ultimate that was discovered in version 3.0.0, allowing every character to face the Z-Axis by exploiting the behavior of springs. It is easiest to perform in Stage Builder, but can also be done on Palutena's Temple, or by the use of Sonic's Spring Jump or Mega Man's Rush Coil. It was originally patched out in version 4.0.0; however, a new method involving Link was discovered in version 8.1.0.
How to perform
In order to perform this glitch, the player needs to attempt to perform a wall cling the instant they start moving downwards after bouncing off a spring. The easiest way to do this is by making a custom stage with a wall right next to a spring. By attempting to wall cling after bouncing on the spring, the character will instead face forward, with their hitboxes following suit. Using the character to grab any character within range will cause them to face forward as well.
From version 8.1.0 onward, the glitch can be performed by Link using Ancient Bow and Arrow while the opponent is flinching by any Assist Trophy or Poké Ball Pokémon with a multi-hit attack (with the two most common ways being the use of Knuckle Joe or Fennekin), or a Smart Bomb. Upon successfully connecting Ancient Bow and Arrow with an opponent, the glitch is triggered. The behaviors and effects of the glitch are otherwise the same as the original method. Due to this, it is generally recommended that the player pause the game if the one is attempting to perform the glitch with Assist Trophies or Pokémon on Training Mode (which makes all characters intangible) until the helper in question disappears, since getting hit by another attack automatically fixes the glitch.
Performing the glitch with various characters leads to various, interesting results: