Black Element is an enemy in Final Fantasy X, encountered in the Omega Ruins. It has very high Defense, but low Magic Defense. Like its weaker counterpart, the Dark Element, it has no elemental weakness. They are extremely dangerous when fought with a Spirit because they can cast Berserk, and combined this with the Spirit's Poison attack, they can do serious damage.
Its appearance is a set of nine black runes. Dark energy is emanating from it.