For the chest burster, we built a beautiful little rod puppet. At full extension, it stood maybe a foot and a half. It was painfully thin, but it was a rod puppet and we cast it out of incredibly translucent silicon which Conor was experimenting with. It was beautifully cast by Rob Trenton and Suzi Battersby. The armature is made out of polished aluminium which was sanded and sculpted to look like bones. It's a beautiful, elegant little piece really and that took about six of us to operate. The chestburster was sculpted by Dominic Hailstone.