Perhaps a mixture of the stem cell technology alongside just access to first proper body printing, like a full body augment trying to focus on a more natural look? May need to brainstorm it a bit more.

Right now the idea is they were a musician that, through a lifetime of smoking and drug usage, went to Theseus for an experimental stem cell research, allowing their body to be altered on a genetic level.

Though I may change that a bit too

I found adoption culture always so weird besides maybe some creators not wanting unused characters to go to waste, but producing a bunch of designs just to be sold off I never understood. What's preventing buyers from making their own anyways and/or commissioning art directly?

High quality version
itaku.ee/images/1369838

High quality version:
itaku.ee/images/1369836