The site mentions that the visual effects team at ILM likely didn't have time to create a new alien character from scratch. (cbr.com)
Sometimes horror films work best when your imagination is required to see what is behind that door — and not some fancy visual effect by ILM and Tippet Studios. (soundtrack.net)
The Robots runs three minutes and 23 seconds and includes remarks from ILM visual effects supervisor Scott Farrar. (dvdmg.com)