Cilami
Cilami is basically a cumslimegirl. A slime girl made purely from cum. Made by perverted researchers (Who became it's first victims) who wanted a more efficient way of mass fertilization.
Because of her nature it can be quite the difficult being to vore. Warning though: unbirthing it has a high chance of impregnation from the cum of so many different species mixing together to form the being. Cock Voring it wil allow it to, notonly drain the balls, but be able to replicate the seed within whenever it wants (able to do so with all genetics gained via cum)
When consuming other beings it will simply do the balls' job. Transform them into cum, thus giving a body's worth of mass and more genetics to toy with.
it is capable of cognitive thinking, and talking (to a basic extent) but lets it's pre-programmed desire control it's actions: It wants to make every womb have a child in... even if it means existing eternally.