Terence/Behind the Scenes

The Railway Series
Terence is a fictional tractor. Terence created by the Rev. W. Awdry.

He first appeared in The Railway Series book, Tank Engine Thomas Again, which was published in 1949. His last appearance was in Thomas and Victoria, published in 2007.

Terence is based on a Caterpillar Model 70; the largest and last design of petrol-powered tractors in the Caterpillar Tractor Company's range.

Regular Model
Terence’s model was custom built from perspex for the first series. The model was built to run on Styrofoam road and was painted in glossy car body paint.

Terence's model had a total of four face masks, one of which was never used on-screen.

CGI Model
In 2009, the series introduced Computer-Generated Imagery (CGI) as a replacement for the show's long-standing live-action models. Terence was recreated from scratch in CGI by Jam Filled Toronto in 2017 for production of the twenty-first series. His model was "hand-sculpted" in Maya, a 3D animation and modelling software. Photographs of Terence's Gauge 1 model were used for referencing.