A Trainee is an young engine in training. Every chugger was once one. in real equivalent- Student
- Koko is the only electric-powered trainee.
- Wilson, Hoot and Toot are the only diesel-electric-powered trainees.
- Piper is the only steam-powered trainee.
- Brewster is the only fully diesel-powered trainee.
Community content is available under CC-BY-SA unless otherwise noted.