Wait, is this the technical definition (completely lacks a biological gender) or the somewhat newer one in-line with the trend of having a name for everything (lacks interest/does not express interest in romantic relationships)?Well in Marathon, The Security Officer is male, but has no visible reproductive organs (or at least that is how he was "made", and this is according to a terminal you find in game) though is most definitely male in every other regard. He also lacks a sexual drive because of this.In Halo this was a side effect of the augmentation procedures given to the SPARTAN II program, though I am not 100% certain about SIIIs, it seems to have been removed with the SIVs, (seeing as Demarco will flirt with Sarah Palmer, at least in the first episode of Spartan Ops). However it is stated with spartans that despite this effect, they are not aromantic and are still capable of having children, as the side effect will effect each individual at different levels, or so I remember.