Algy is a bus. When he first arrived he teased Bertie, but made up and became friends with him after breaking down. Algy now helps Bertie take passengers around Sodor.
Algy only appeared in annuals. When he first appeared, he was identical to Bertie with yellow and cream paint and a red stripe. The second and third time he was seen with a full cab and a turquoise livery with a white stripe.