Gigan is a menacing kaiju from the Godzilla franchise, first appearing in the 1972 film 'Godzilla vs. Gigan'. Characterized by his cybernetic enhancements, Gigan has a fearsome appearance with a buzzsaw in his abdomen and hook-like claws. He is often depicted as a space monster and an antagonist to Godzilla, serving as a weapon for alien invaders looking to conquer Earth. Gigan's role in the series is that of a formidable foe, showcasing his destructive power and mechanical prowess, making him one of Godzilla's iconic adversaries.