Hurricane!, An Important Visitor ( cameo), Rumours and Speculation ( does not speak) and Diesel's Christmas ( does not speak) Hover Bother!, Sodor Surprise Day ( does not speak), Henry's Scary Passenger! ( cameo), Toby to the Rescue and All in a Day's Rescue ( mentioned) However, he still had a bit of a rivalry with Percy. Once, when the Mail Train was threatened to be scrapped, rumours began to spread that Harold would make the deliveries instead. However, Thomas and Percy worked even harder than ever to prevent that from happening and Harold's chances of taking over the mail run were stopped when the unpredictable strong winds caused him to be grounded. Series 3 - Percy's Promise, Thomas, Percy and the Post Train, All at Sea and Thomas and Percy's Christmas Adventure

Top 5 Non-Railway Vehicles ( does not speak), Thomas the Helicopter and Thomas and the Birthday Surprise Quotes " Hello", said Percy, " Who are you?" " I'm Harold. Who are you?" " I'm Percy. What whirley great arms you've got!" " They're nice arms!" said Harold, offended. " I can hover like a bird. Don't you wish you could hover?" " Certainly not! I like my rails, thank you". " I think railways are slow!" said Harold in a bored voice. " They're not much use and quite out of date". They're based in convenient locations including supermarkets, newsagents and train stations. Plus they're often open late and on Sundays. When Percy meets any of the other talking engines, the engines will recognize and talk to each other! (Each sold separately and subject to availability.) Series 5 - Baa! ( does not speak), Toby and the Flood, Thomas and the Rumours ( does not speak), Oliver's Find, Sir Topham Hatt's Holiday and Make Someone HappyHarold was the only character introduced after the first series to have a speaking role in Thomas and the Magic Railroad. Series 14 - Henry's Health and Safety ( cameo), Being Percy ( cameo), Jumping Jobi Wood! ( does not speak), Jitters and Japes ( cameo) and Merry Misty Island

The fifteenth series episode, Stop That Bus! was the first time Harold has flown outside of The Island of Sodor. Since joining the Sodor Search and Rescue Centre, he has acted a lot more mature and almost never teases the engines. He takes his job as part of the team very seriously and continues to remain on patrol. Series 16 - Race to the Rescue ( cameo), Express Coming Through ( does not speak), Sodor Surprise Day ( does not speak) and Welcome Stafford! ( cameo)

Learning to read

Harold flew by at Tidmouth Sheds for a routine flyby and greeted the steam engines, accidentally spreading sneezing powder all over Thomas, Splatter and Dodge, dumped by Diesel 10. In earlier scripts, he did not speak and he spread quarry dust in the quarry bowl all over the three engines. Airship ( does not speak), Autumn Leaves ( does not speak), Blown About!, The Telescope ( does not speak), Rusty's Rescue!, Playful Passengers ( cameo) and Henry's Hairy Passenger ( cameo) Harold also speaks in a manner reminiscent of an RAF pilot, using terms such as "wizard" and "old chap" in conversation.