Thomas the Tank Engine Wikia
Thomas the Tank Engine Wikia

Isobella is a Sentinel steam lorry, who works for the Sodor Construction Company.


Thomas & Friends

Isobella once had to deliver a piano, but she lost control and ended up dangling over of the side of a retaining wall next to the railway line. Kelly had to rescue her.

While working on the foundations for a dairy barn, all the diesel-powered machines ran out of diesel fuel. As she was the only machine still in working order, Isobella had to collect some barrels of diesel fuel for the machines.


Isobella is a hard worker, but does not like getting dirty. She can also be rather cheeky and temperamental.

Technical Details


Isobella is based on a Sentinel DG4 steam lorry with a flatbed. Elizabeth shares the same basis.


Isobella is painted yellow with red and black lining. Her number 22 is painted on the sides of her cab in black.


Voice Actors


  • In Robert Gauld-Galliers artwork for Isobella, it appears that she and Elizabeth are wearing the same face in their original artwork.
  • Isobella is the only pack character introduced in the main series to have two remotes built for her.
  • In the Wooden Railway and Capsule Plarail ranges, Isobella's name is misspelled "Isabella."
  • In some promotional sketches of the Pack, Isobella is seen with a yellow four wheel trailer, which is not present in the show. However, this is present with her Wooden Railway toy.
  • Three of Isobella's faces were preserved by the Top Props preservation group.
  • Isobella is the first character to be numbered 22, followed by Luke and Rebecca. Out of these characters, she is also the only one to be a road vehicle and not to appear in the CGI series.
  • Isobella is the only original member of the Pack to not be manufactured by Trackmaster.
  • Isobella is the only female member of the Pack that first originated in the model series.
  • Isobella had a total of eleven different facial expressions that were sculpted for her, although only eight used on-screen and three of which smug, laughing and sleeping were never used on screen.
  • Isobella is one of few characters to have an accident that never actually happened onscreen. The others being James, Bulgy, Duncan, Lorry 3, Tiger Moth, Henry and a few others. She is also the only female character to have had an offscreen accident (at least in the model era).



Non-rail vehicles

* RWS only | ** T&F only | *** Other Media only