Brewster is a strong young trainee who tries to ensure everything work out. He tends to be among the slower locomotives on the railway and tends to ask alot of questions, but this also helps him be ready for a job, and is a dependable and reliable diesel! Being the strongest of the trio, Brewster works with the Chuggineers that work with Crotoonian Construction Company, typically helping with tracklaying, track repairs, and construction work.
Brewster is based on a BR Class 55, modified with two-axle trucks and minus the rear cab, which has been replaced with a yellow end with corridor connection.
Brewster is painted British Railways' Rail Blue with yellow warning panels.