[Bunsey]

i think the woman's robo colony probably went wrong because of the intro of the 3rd one, especially if she just stuffed him in there without a proper intro. The pair would've probably been fine. I had a lot of failures with introducing pairs between the ages of around 4m - 1yr. All my over 2yr intros have worked, as have all the intros where both are under 3m. I've only ever had one young to old intro work, although most people say that this is usually successful. In all but one of my cases, the young one grew up and beat the adult one at around aged 5-6m.

If i had a lone robo, personally i would always TRY to pair him/her with others as they always seem much happier in pairs.