Hal Bertram is a computer technician and designer who helped pioneer the use of CGI characters and avanced computer controls at Jim Henson's Creature Shop. As stated in his former bio on the Creature Shop website, Bertram "was responsible for setting up The Shop's Digital Visual Effects department in the nascent days of Computer animation, with a particular emphasis on applying the company's performance skills to computer animation."
In 1987, Bertram worked with Peter Miller to implement Dave Houseman's early design for the Henson Performance Control System, and later developed the Henson Real Time Performance Edit Suite, first used in Babe, which allowed for greater control over speech synchronization. Through the next decade, Bertram was the company's primary "digital supervisor," overseeing the development of software as well as characters and sequences for individual film and TV projects.
- Muppet Treasure Island: CGI Mosquitos
- The Animal Show: Computer generation development for Tizzy the Bee
- Loch Ness: CGI supervisor
- The Wubbulous World of Dr. Seuss: Virtual set supervisor
- The Flintstones in Viva Rock Vegas: CGI remote control bird
- Jason and the Argonauts: CGI supervisor (Harpies)
- The Brotherhood of the Wolf: Digital effects supervisor
- It's a Very Merry Muppet Christmas Movie: Digital character and visual effecrs
- Five Children and It: Visual effects lighting consultant
- Mee-Shee: The Water Giant: Performance animation consultant