Not even your Patron? [ Nico will go to sit on the couch, thinking they really need to clean this couch later. ] Just need a vein, or the affected areas?

[ He should have brought a book or something. Good thing he's got his omni and any sort of media he can think of. ]

I'm not sure what would cause a permanent swap, but maybe they had a personality change? Power change?

She didn't say anything about checking what her bloodtype actually was when tapping into Coldblood powers.