Biologically and functionally speaking, he's whatever and everything. Practically speaking, he chooses to have a dick and look like a big muscular man that looks nothing like his previous form (so its even more deliberate), so it seems the only thing that survived his ascention was his gender identity.

[–] ssj2marx@lemmy.ml 2 points 5 months ago* (last edited 5 months ago)

In my headcanon, the further into the future you go the less attached to his humanesque form Dr Manhattan becomes, and eventually he just becomes a sentient force that does things that are beyond comprehension without needing a physical body at all.