What would I do in his shoes, with his power?
Hmm.
No offense, Taylor, but I don’t think you’d be the type to do things on quite the same scale as Sphere.
I wouldn’t leave any vital openings uncovered. That was a given.
Oh, right, she meant nowadays, when he’s Mannequin.
Another good question might be “what would I not be able to do?”
My focus -Mannequin’s focus- would be on designing way to make himself a completely closed system. It wasn’t just sensible, it was the whole point of his transformation. He’d have perfect recycling of all waste, dissipation of excess energy by diverting it to mechanical movement, intake of energy by absorption of heat.
Absorption of heat, you say? That’s the one thing here that’s not closed – maybe it’d be possible to somehow take advantage of that?
I’m not sure how, though. Locking him in a freezer until he passes out isn’t really an option here.
Could that be a clue as to how he sensed the world around him? Heat? Or was it something completely different? Radiation? Radio waves? Electromagnetics?
It might be all of the above. We do know he uses electromagnetics to keep a couple parts of his body attached, though.
It’s worth noting that sensing the world via radio waves would technically count as a form of sight, probably.