Wikia

Lionel produces a range of Thomas and Friends models in O scale. Lionel had previously manufactured Thomas and James models in G gauge but dropped this line in 2001. As of 2013, all the O Scale engines are powered by the Lionchief Remote. Percy, James, and Diesel have also gained CGI-style faces.

Engines

O Scale

Thomas (discontinued, later reintroduced with Trainchief remote)
Percy (discontinued, later reintroduced with Trainchief remote)
James (discontinued, later reintroduced with Trainchief remote)
Diesel (discontinued, later reintroduced with Trainchief remote)
'Arry and Bert (discontinued)

G Scale

Thomas (discontinued)
James (discontinued)

Rolling Stock

Annie and Clarabel (only available in the set with Thomas)
Expansion Pack: Troublesome Trucks #1 and #2, Sodor Mining Company hopper, Tidmouth Milk single dome tank car, and four straight track pieces
Sodor Freight Expansion Pack: Flatcar with Harold, gondola with canisters, S. C. Ruffey, Thomas and Friends bobber caboose, and four straight track pieces (discontinued)
Sodor Tank and Wagon Expansion Pack: Anopha Quarry car, Crovan's Gate wagon, oil tank car, fuel tank car, and four straight track pieces
Sodor Freight 3-Pack: Gondola with canisters, S. C. Ruffey, and bobber caboose
Troublesome Trucks Christmas 2 Pack: Two trucks with present loads (discontinued)
Sodor Work Train 3-Pack (discontinued)

Train Sets

Thomas the Tank Engine O-Gauge Train Set (Thomas, Annie and Clarabel, Sir Topham Hatt, Engineer, Conductor, and an oval of track) (discontinued)
Thomas the Tank Engine O-Gauge Remote Train Set (Thomas, Annie, Clarabel, Sir Topham Hatt, engineer, conductor, and an oval of track)
Thomas & Friends O-Gauge Christmas Remote Train Set (Thomas, Annie, Clarabel, and an oval of track)
Percy O-Gauge Remote Train Set (Percy, two troublesome trucks, and an oval of track)
James O-Gauge Remote Train Set (James, Crovans Gate car, bobber caboose, and an oval of track
Diesel O-Gauge Remote Train Set (Diesel, Anopha Quarry car, bobber caboose, and an oval of track)