Peter Sam, previously known as Stuart, is the number 4 engine on the Skarloey Railway. He previously worked on the Mid Sodor Railway.
Stuart was built in Wales in 1919 and arrived on Sodor to work on the Mid Sodor Railway a year later. He was named after his builder, Kerr Stuart. Stuart, Falcon and Duke became very close friends, though he and Falcon sometimes got tired of Duke's constant fatherly advice. When the railway closed in 1947, Stuart and Falcon were sent to the Peel Godred Aluminum Mines, where they worked until 1951, being sheeted for a year and then were bought by the Skarloey Railway and repainted red (Railway Series only). He was renamed Peter Sam, after the controller of the railway. Unlike Falcon, now named Sir Handel, he was a very hard worker. However, sometimes this did lead to trouble, like when he left the refreshment lady behind because of worrying about missing Henry's connection.
In 1958, Peter Sam had a nasty accident with slate trucks at the slat incline, severely damaging his funnel. Before his new funnel arrived that winter, he accidentally knocked it off when he hit an icicle in a tunnel. His crew had to resort to using a stray drain pipe as a replacement. Soon after, he was given a Giesl funnel that made him work very well, and the other engines were quite envious.
SI3D's 2006 model of Peter Sam was used until The Search for Smudger. From then onwards, the 2012 model was used with the 2006 one being used in shots with other 2006 models, such as Duke and Bertram.
Peter Sam is a very kind and hard working engine. He can sometimes get a bit puffed up, especially in his youth. But compared to his friend Sir Handel, it is very much less so. He can sometimes worry about his work, which leads to him forgetting certain things.
Peter Sam is based on Edward Thomas from the Talyllyn Railway in Wales.
- Gordon Goes Swimming (cameo)
- The Blame Game
- Engine Unknown (does not speak)
- Attack of the Railway Pirates (cameo)
- How the Diesel Stole Christmas (cameo)
- The Search for Smudger
- The Most Famous Engine (cameos in Part 1)
Peter Sam has appeared in every season featuring the Skarloey Railway Engines. These are seasons 4-7, 9-13, 16-18, and 20. He is voiced by Steven Kynman in both dubs.
- Peter Sam is one of two major characters to have a major physical alteration (excluding restorations from scrap). The other is Henry.