Thumper is a Orange Quarry Machine That Works at The Sodor Construction Company.
So Salty moves out of the way, and Thumper is Working on The Wrong Rock, and Boulder falls onto The Ground Below, Thumper, However, is Sad, But he does work hard, and tries to make Sir Topham Hatt Proud.
- Thumper has made many cameos.
- Thumper is also Seen in Thumper saves the day Wooden Railway Collection Videos.
- Season 1 :
- Season 11: Wooden Brakes (mentioned)
- Season 13: The Duke of Hazard, Ivo Hugh's Day at the Zoo (cameo)
- Season 16: Marion Had a Little Lamb (cameo)
- Season 17: Hard to Handel (does not speak), Oliver Confusion
- Oliver's Eleven (original storyline only)
- Thumper is the third vehicle to not have black chassis with the first being Terence, the second being Sodor Railway Repair, the fourth being Fergus, the fifth being Rocky, the sixth being Byron, the seventh being Flynn, and the eighth being Stephen's Coaches.