The originalheld the mantle from 1963
Robert Louis "Bobby" Drake
Powers. Cryokinesis: generates and manipulates ice and cold, freezes ambient water vapor, forms ice slides/constructs, and transforms his body into organic ice; an Omega-level mutant.
Origin
Bobby Drake was born a mutant whose body can generate and manipulate ice and cold at an Omega level. One of the five founding members of Professor Xavier's X-Men, he first appeared in The X-Men #1 (1963) and took the codename Iceman.