The water effect was achieved by using KY Jelly and brushing it between each frame.
The Trenchcoat Man puppet is only 8 inches tall.
The walls were hand carved brick by brick on 1/4 inch sheets of a rigid urethane foam mounted to wood supports.
Nirvan Mullick first read the original Box Man novel back in 1996. He unintentionally thought of his own version four years later.
According to the Nirvan Mullick, the most difficult shot of this short film was the opening scene. It took 9 days to light and set up the motion-control rig and then another 7 days to animate. It involved an elaborate two part camera move that Mullick wanted to appear seamless. But after the first camera move was over, and then after taking five days to animate the puppet walking into position for the second camera move, a motor in the motion-control rig stopped working. The crew had to take the camera apart to fix the motor, and then put the camera back in order to finish the shot. The problem was fixed during post production.