Carl Creel becomes water on Agents of S.H.I.E.L.D..
Bio-conversion is a super-power which refers to the ability of an individual to transform the atomic structure of their own body or the body of another into an alternate substance. This power is widely used in comic books of the superhero fantasy subgenre.
On Doctor Who, the alien race known as the Daleks have employed a process by which nanotechnology is introduced to biological organisms, converting anything it infects, whether living or dead, into a Dalek puppet. Even memories are rewritten and become part of a subroutine, which makes the puppet ideal for infiltration. A full cybernetic conversion may even transform a living human completely into a Dalek. Such was the case with Oswin Oswald, who was the last survivor of the Starliner Alaska, which crash-landed on the Dalek Asylum planet. [1]