gross and unfounded otsutsuki biological headcanons
they have sex organs they just don't denote gender. all otsutsuki are functionally the same gender but there are like five common combinations of primary and secondary sex organs and even more rarer ones
any of them can give birth but the ones who don't have vaginas throw up the baby like king piccolo. they probably can shape shift honestly but their society is so based around living things and body parts going in and out of mouths that i assume this is how it happens
they don't have sperm and eggs. the baby carrier eats part of the baby contributor to make a combined genetic baby.
they don't eat regular food, but they can eat kinds of energy other than chakra. electricity is like an energy drink to them (big energy for a time at the cost of a crash). plasma is like. a hearty meal, they need to take a nap afterwards
they're like albatrosses and sharks in that they can keep flying while sleeping, but they sleep normally too. blinking, however, is something they don't strictly have to do, leading to them giving humans the heebie jeebies