Error knuckles is a knuckles originally from the Uglandan comic not a lot of info is told story wise though when being questioned by the Knuckles he told us a lot of info
error knuckles were a knuckles but not known by most of the other knuckles they were originally legends until the uglandan people found them.
error knuckles just always seemed to have a bad relationship ship with glitch knuckles although error knuckles are not good at fighting so instead they hide in suits that look like glitch knuckles
it is unknown why glitctrap hates error knuckles though shadow think it might be because error knuckles might of helped one of his “prey” escaped
error knuckles has always been scared of ERROR! Sans it is unknown why