Isobella is a Yellow Sentinel Steam Lorry. She is a member of The Sodor Construction Company and is friends with Kelly, Jack and Alfie.
Appearances: 
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- Season 8:
- Season 9:
- Season 10: Lorry's New Flatbed.
- Season 11:
- Season 12:
- Season 13:
- Season 14:
- Season 15: For Whom The Belle Tolls, Polar Express Coming Through! (cameo), The Island of Misfits Engines (cameo).
Specials:
Basis:Edit
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