The one that ends in the explosion is clearly the hallucination, though it's debatable who's hallucination it was, or even *if it was* a hallucination, or a split worldline/alternate/parrallel reality.
In RL, Jonna read these when we first wrote them, (about a year maybe more, ago now...?) and insisted we keep both. She was also feeling really under the weather when she read this, laughed so hard, and made these demands that both stay. However, she stands by her ruling even now, when I asked her again, so... There you have it!
EDIT: Just to be absolutely clear, Jellyfish is not a robot. Or a Robit. Or a Nindroid. Or any other kind of mechanical creature. He is biological. And not a techno-biological hybrid either. Not a cyborg. Not a Droid. Not a.. No, I think that covers it. he's 100% Minifig/Human.