Toushirou: Hitsugaya

Hyōrinmaru creates a flow of ice shaped like a Chinese dragon that freezes anything it touches. It also allows him to control the weather in his immediate vicinity.

During the Thousand-Year Blood War , it is revealed that the "ice petals" behind him are a countdown to his Bankai's completion, not its end. Once they vanish, he enters an adult form to handle the immense spiritual pressure of his true power, which can flash-freeze and nullify the abilities of anything it touches. Hitsugaya Toushirou

Hitsugaya wields the most powerful ice-type Zanpakutō in the Soul Society. Hyōrinmaru creates a flow of ice shaped like