The T-800 Endoskeleton Trivia Questions

Cameron wanted the endoskeleton skull to evoke a human skull's shape, but with a segmented, metallic jaw and hollow eye sockets for the red light.

Multiple endoskeletons were constructed—several full-body puppets and partial heads—to allow for different shots and stunts simultaneously.

The red eye was a practical effect—a small red LED or gel-covered light inside the animatronic head—not added later by computer.

For most full-body shots, a stop-motion or rod-puppet was used because no actor could fit inside the rigid metal shell and move believably.

Sound designer Adam Jenkins recorded a sledgehammer striking a concrete floor to achieve the heavy, metallic stomp of the endoskeleton walking.

The endoskeleton was actually made of lightweight materials like fiberglass and plastic, with some metal parts, to make it easier to animate and puppeteer.

This is a common myth; the endoskeleton was always planned as a visible, physical robot—Cameron wanted it to feel tangible and terrifying.

James Cameron initially envisioned Lance Henriksen as the Terminator, and had him do early test footage in the suit before casting Arnold Schwarzenegger.