Diabolos, also known as Diablos, is a recurring summon in the Final Fantasy series, known for his dark and ominous presence. Typically depicted as a powerful demon, he commands gravity and darkness-based magic. In various installments of the series, Diabolos is either a formidable ally or a challenging opponent. His character embodies mystery and power, often appearing in cryptic or hidden locations, requiring players to solve puzzles or complete specific tasks to summon him. Diabolos plays a significant role in enhancing the strategic depth of gameplay, providing unique skills and abilities.