Now what good hemodialysis would do is kind of a stretch. Using the onboard heater on a dialysis machine is a pretty radical way to warm the patient’s blood, but without a central line catheter or atrio-venous fistula to access the bloodstream

it’s a waste of time. No access, no dialysis, no blood warming.

Point of order: in an old issue of Marvel Team-Up from the 1980’s Iceman and the Human Torch were told my Mister Fantastic that they essentially had the same powers as “human heat pumps”, just externalized differently (Johnny externalizes the heat he absorbs from the environment, Bobby internalizes it.) That’s why Bobby never gets cold; he’s always toasty inside.

Of course, that may not be canon anymore. Jim Shooter was EIC then. Your mileage may vary.

~~JD~~

Admittedly, I don’t know if there’s any support for Bobby doing fine in the cold in his regular form. I know that initially, he stayed fleshy and was just surrounded by the cold (and in fact, looked more like a snow man) and it was only a later development that he turned fully into ice including the ability to melt (and reform!).

By the by, did they ever do any development on the “he may be the most powerful mutant alive” bit they started on while Frost possessed him? Something along the lines of that his powers were actually temperature control and matter creation, and that mental blocks were all that kept him on this ice theme.

And while he’s at it run a DCAP-BTLS