Emily

Premise
Before the events of the Sodor Files, Emily was a regular worker on the Main Line and a mixed traffic engine that could do almost any job with little difficulty or objection. In terms of personality, Emily was kind and compassionate, but could often feel inadequate and sometimes be a little selfish or bossy.

Emily was never regarded as one of the "big engines", possible because she did not share their distaste for smaller engines. She has been shown to be helpful in the past when other engines are being teased or feeling sad, examples including Salty and Henry. Emily is a Stirling Single and was a very beautiful engine, and she made friends wherever she went. However, her attempts to do the right thing could also end up causing confusion and delay, as she sometimes was pressured into action when she didn't know what to do. However, Emily always fixed her mistakes without fail, and could help others fix theirs too. Emily ran the length of the Main Line frequently, but was also occasionally sent to branch lines when they needed a spare engine, particularly for goods work.

Emily was one of the most efficient engines on the North Western Railway, and one of the most versatile too. Recognisable from a mile and with a cheerful personality, Emily was an inspiration to many of the smaller engines, even if they did not let it on.