User blog comment:MMYP999/MMYP makes a Smash Roster/@comment-29966464-20161214064631/@comment-27416494-20161214074616

Ah, but what you don't know is that you'll have to unlock them, and the don't appear on the character select screen naturally. What you have to do is score exactly 56 KOs in Cruel Smash with Jigglypuff, but the only move you'll be allowed to use is Rest. As soon as you score your 56th KO, you will then have to input the Konami Code (you'll have to use the d-pad though, which means you'll have to wait through all your taunts) without taking any sort of damage. Failure to do so will delete the last 10 hours you've spent on your current save file. If you can manage to do that, you will then be booted back to the title screen, where you will be given exactly fourteen seconds to input the following code: Up Up Left Right A Start X R Y Left Up L Select Down Down Down Right B A B A L R L R X X X X Home Menu If you fail to finish in time or miss any of the inputs, all of your save files will be deleted. Any attempts to begin a new game from that point will require you to beat a "special" version of the Genocide Sans fight in Undertale. Except instead of Sans, you will be fighting the Demi Fiend from SMT, whose attacks will kill you in one hit. The background music will also be adjusted to play an air horn version of the Grand Dad theme, with snippets of the Nutshack intro spread throughout random points of the song. Failing this boss fight will cause your console to explode. If you actually managed to pull off the code, then all you have to do is complete Classic Mode with Waluigi, using only his Down Smash to clear every stage. Doing so will actually skip the final battle against Master Hand, instead forcing you to fight King Crimson (yes, that King Crimson... it just works) IRL.