Captain Cold
Possesses a Cold Gun that allows him to freeze objects to absolute zero
Extensive knowledge of cryonics.
Haku
was an orphan from the Land of Water, and a descendant of the Yuki clan. He later became a shinobi after meeting Zabuza Momochi whom he partnered with, ultimately becoming a Mercenary Ninja.
Ymir
Since Ymir is an Ice Giant whose body continually generates intense cold, Ymir's body is always thickly covered with snow and ice.
Tōshirō Hitsugaya
He has control water and ice. His slashes create an immense amount of spiritual power which overflows from the tip of the blade, creating a flow of ice shaped like a Chinese dragon. The dragon flies towards opponents and instantly freezes anything it touches.
Alright it's time to stay nice and cool with these awesome Ice wielders.