|Arrived on Sodor||Before 1975|
|Current Voice Actor||EnterprisingEngine93|
Frank is a Diesel who works on the Arlesdale railway.
Frank arrived on the Island of Sodor in 1975 the same year he was built. He was a very grumpy diesel always doing maintenance around the railway, and was angry that he wasn't in the first RWS book about the Arlesdale Railway (he had not been built at the time). This made him careless and he crashed through the back of the shed.
- Toad the Lucky Brake Van (cameo)
- Oliver's Tiny Tale (does not speak, not named)
- Great Western Escape (cameo)
- EnterprisingEngine93: Episode V only
Frank made his first and only appearance in the book Jock the New Engine. Neither he or Jock have appeared in the TV series yet, thought it is possible they may in the future.