Season 1

Season 1 aired on January 1. The pilot was Smells and Trash later renamed Percy's Smelly Friends. Ben Small narrated the season for US and UK. All US episodes were re-narrated by Michael Brandon.

Episodes
Railway Adventures on Sodor: Prologue

1. Day of the Diesels- Sir Topham Hatt brings four diesels to help out.

2. Diesel Does It Again- Sir Topham Hatt needs another engine and until he can purchase another engine, Diesel must help.

3. The Four Little Engines- Skarloey says he needs another engine on his railway so Thomas travels to the scrapyard.

4. Percy's Smelly Friends- Sir Topham Hatt brings an engine to help with unused things and garbage, but he smells. Percy has luck no beter weeks later.

5. Old Groaner- Some people hear noises at night, but they don't know who it is.

6. Twin Trouble- Sir Topham Hatt buys two identical tank engines who play tricks on Donald and Douglas.

7. Annie Without Clarabel-Thomas has an accident and Percy takes Annie and Clarabel but Clarabel has an accident too!

8. Clanking Old Edward- James says Edward is no use and Sir Topham Hatt pulls a few strings to prove him wrong.

9. Henry and Emily- The first flashback episode. Henry and Emily fall in love with each other.

10. Thomas and Molly- The new engine Molly arrives on Sodor and Thomas helps her with everything.

11. Spencer and the Signal-New engine Spencer meets up with old LNER foe Gordon and have race to settle an old dispute. Spencer ignores Edward's warning about the signal beyond Gordon's Hill.

12. Second Chances- Spencer has a second chance when James has an accident.

13. Molly's New Friend- Molly befriends new engine Neville which makes Thomas suspicious.

14. Gordon and Danni- Danni comes to help Gordon and Spencer, and is around Gordon a lot. (No, don't even think about it. Actually, yes. It's going that way.) 15. Colorful Clarabel- Clarabel thinks about being a different color an speaks about it with Thomas, which worries him.

16. Molly and the Old Bridge- Molly discovers a bridge, but it starts to collapse.

17. Escape- Three engines escape to Sodor and are stationed to different jobs.

18. Charlie and the Chocolate Factory- Charlie's job is quite messy and he loves messes! (We see where this is going.)

Characters
Thomas

Edward

Henry

Gordon

James

Percy

Toby

Duck

Donald and Douglas

Oliver

Emily

Diesel

Arry and Bert

Boco

Daisy

Mavis

Molly

Whiff

Scruff

Neville

Spencer

Stanley

Charlie

Billy

Bill and Ben

Danni

Sir Topham Hatt

Skarloey

Rheneas

Sir Handel

Peter Sam