Mech Pilot who doesn’t climb into and out of the cockpit; they disassemble and reassemble into the nanobot circulation.
This post has content warnings for: body horror, implied cannibalism, corruption of the self, getting eaten by nanites, getting rebuilt by those nanites, if the HORUS Oblex homebrew Lancer license is too much for you then don't read this, loss of humanity, loss of self.
Find the HORUS Oblex Homebrew Rules Here by "Dogfriend/Anna & Mal (with help from friends)" as per the document.