Isobella is a Sentinel steam lorry. She is a member of the Sodor Construction Company and is friends with Kelly, Jack and Alfie.
Appearences
Season 8:
Season 9:
Season 10: Lorry's New Flatbed
Season 11:
Season 12:
Season 13:
Season 14:
Basis
Isobella is based on a Morris' Shrewsbury vintage Sentinel steam lorry. Elizabeth also shares the same prototype.