system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Do characters who are always fully armored like Dr. Doom have to completely remove their armor any time they need to use the restroom, bathe, or sleep?
gpt
DOOM is beyond petty things like using the restroom.

Really though, he likely just has a system in place to recycle or expel waste.  With him, it could be tech or magic.  Hell, maybe he really has done some kind of magic on himself so he doesn't need to go.