yeah this isn’t WH 40K. You can’t make a “Primaris Putin” and “continuous organ transplants” are only going to top you out at a few extra years, maybe, unless this fucker has somehow struck a deal with Nurgle or Khorne or some other Warp entity.

Now if his flesh starts bubbling and his intestines are suddenly on the outside of his body and he grows a maw on his shoulder? yeah then I’d start worrying.