Embryos from a sexless race of clones that were stolen by rebel scientist Quallahan Hoon and modified to have reproductive organs in an attempt to re-sexualize the race. Quula (female) Hoon and Quola (male) Hoon, designed to be a mated pair, but after Hoon's arrest were treated like siblings.
Other than the reproductive organs they are nearly identical internally and externally, though their eyes are slightly different as a side effect of the treatments.
I had to switch the bottoms because the strings just weren't cooperating on Quola.
Just noticed the arm off on this one...