Bert is the quietest of the Arlesdale Railway engines. He is the youngest out of the original three and appears to be very easy going and friendly. One thing Bert doesn’t like, however, is the idea that bigger engines (and some people) might look down on the little engines just because they’re small. Bert usually gets on with his jobs without complaining and doesn’t mind what kind of work he does as long as he’s treated with respect.
Bert is painted blue and is based on the Ravenglass and Eskdale Railway’s miniature engine ‘River Irt’. In the original story ‘Tit for Tat’, Bert became very angry with two clergymen when they drove past and accidently sprayed him with mud. The two clergymen were the Reverend W. Awdry, and his good friend, the Reverend Teddy Boston.