Although the Maximum damage a character can accrue during a single stock is 999% normally, due to a glitch, the lava in both the Super Mario Maker stage and a Stage Builder stage can make the damage cap exceed the 999% amount. In order for a player to achieve this they must play in a certain layout of Super Mario Maker or a built stage that features lava under impenetrable platforms so the character that is trapped by the lava continually gains damage. If the trapped character is at 999% and the damage increases, it actually is exceeding the cap despite the display appearing to cap at 999%. However, this amount of damage can be seen if the opposing player uses an incredibly weak move (i.e. Mario's Fireball) on the trapped character, which would have higher knockback than usual and possibly OHKO, or if the damaged character is grabbed, as the grab duration (something that's determined by the grabbed character's damage) will last longer than it would at 999%. However, using a certain move that will not OHKO the damaged character, like Mario's Cape, will reset the invisible damage and the character's knockback and grab duration will go back to 999%.