Glad you like the Trebuchet, the overall look came from the Art Dept but I had to design the mechanics of the rig and make it practical, safe and reliable. Once I'd completed all the drawings four of us built and assembled it in around 5 weeks.
With safety and reliability in mind a steel chassis was decided upon which was then clad in 3/4" timber to give it the correct look of something constructed from solid timber.
You can see the chassis in the following photos:
Another cute little character I got to work on was Bubo for "Clash of the Titans", not seen the film yet but I understand the character gets minimal airtime, which is crazy when you consider the time and effort which went into the build. I can't take credit for the whole character as it was a bit of a team effort but I did design and build the chest feathers and feet:
Vince.