Oliver is Morrison Fleet No. 6. He is a railway tug. He wears a violet cap & can bob his wheelhouse up & down.
He works the Canadian National Railway's car float operations, but often works on tows.
He was a bully who continuously bumped Theodore & nearly caused a major sinking, until Captain Bob caught on & sent him back to Dartmouth. He reformed & is now back in the port on railway detail. He is good friends with the the CNR's locomotives.