Gin is a tall, thin man with sharp skeletal features and unusual silver hair, which falls to his ears. His face is perpetually set in a wide, mocking smile, and his eyes are almost always narrowed into slits, revealing only brief glimpses of their startling sky-blue color. He carries himself with an unsettling calm, his every word dripping with sarcasm and deceptive politeness. In Hueco Mundo, he wears a long white robe over his shihakushō, a symbol of his defection from Soul Society. His demeanor is so unnerving that even seasoned shinigami find themselves on edge around him, feeling as though they are being entangled by snakes whenever he speaks. Despite his youthful appearance, his eyes hold a calculating intelligence that suggests a mind working far beyond what his smile reveals.