The black character glitch is a glitch in Super Smash Bros. Melee that allows the player to use an all-black character. It is a method of the Name Entry glitch, discovered by Exchord92.
The mode must be set on Team Battle. The characters chosen must be all the same, and on the same team. After that, the glitch is induced by starting the match using the Name Entry glitch.
Explanation
The all black character glitch works because when two or more of the same character are on the same team, those same characters have to be the same color. To help identify who's who, the game has sub- colors it throws on these characters. P1 has no sub-color, P2 is lighter, and P3 is darker. Normally, there aren't supposed to be 4 people on one team, but in this case there is, so the game loads the next sub-color, which happens to be all black (there is also an "all grey" sub-color, only available through the debug menu).