- "Mind my paint!"
- ―Isobella, Jack Jumps In, sixth season
Isobella is a Sentinel steam lorry, who works for the Sodor Construction Company
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. Once, Isobella had to collect diesel fuel for the other machines when they all ran out.
Isobella is a hard worker, but does not like getting dirty. She can also be rather cheeky and temperamental.
Isobella is painted yellow with red lining. She has the number "22" painted on her sides in red.
Isobella is based on a Sentinel DG4 steam lorry, fitted with a flatbed. Elizabeth is another member of this class.
- Television Series
- Other Media
Thomas the Tank Engine & Friends
- Season 6 - Jack Jumps In and A Friend in Need
- Jack and the Sodor Construction Company - A Visit from Thomas (cameo), Percy's Scary Tale, Kelly's Windy Day, Thomas and the Moles, and Mud Glorious Mud
Isobella had a role in the cancelled episodes, The Importance of Being Patrick, Jack and the Quack, Pop Goes the Diesel, Alfie Has a Secret, Isobella Gets Steamed, Jack and Alfie Swap and Bossy Byron.
- The Work Song and One Friendly Family