MM/Roll thematically work better as a couple since they're meant to be a pair that sticks together forever unlike protoman who was a a one off and went slightly crazy partly due to it. The optics of that is "weird" though for an old man to make a pair of child lovers as his supposed children so siblings are easier to frame. It's an image thing and it doesn't really matter since they're robots

MM/Roll thematically work better as a couple since they're meant to be a pair that sticks together forever unlike protoman who was a a one off and went slightly crazy partly due to it. The optics of that is "weird" though for an old man to make a pair of child lovers as his supposed children so siblings are easier to frame. It's an image thing and it doesn't really matter since they're robots