According to executive producer Christopher Keenan, Theo is very particular. He has a great knowledge of mechanics and likes to understand the world around him and how things work. He is open and honest with his emotions, but is not as comfortable with others as he is with mechanics and has trouble with communicating and understanding. [1] Technical Details Basis The first female diesel engine in the television series since Mavis and the first female diesel to originate in the television series instead of the Railway Series ( The Chinese Diesel Shunter and Noor Jehan would be the next). This is my smaller passenger train." said Flying Scotsman. "My little brother and I had a bet that I would get to Vicarstown on the Island of Sodor before he got there on his first Express journey. But...I've broken down. I burst a cylinder." Kerry Shale voicing Kevin in the UK dub, which also happens in Hasty Hannah and not Kevin's later twenty-first series speaking roles.

This makes Theo the franchise's first character to be written with the intent of showing neurodivergent traits, the second being Bruno from Thomas & Friends: All Engines Go, who is officially recognised as being its first autistic character. You did what you could." said Gordon. "If not for you, the passengers on my coaches would not have made it to Sodor and I'd be short of some holidaymakers! You did your bit, and you have shown that you are Really Useful, and besides, apart from maybe me, we all make mistakes, especially on a new job!"Thomas and the U.K. Trip | Hello Thomas and James | Thomas and Connie's Wonderful American Journey | Thomas the Tank Engine Movie - All Star Parade The only time the Mainland Diesels have spoken, as two of them speak in this special and this is the only time Ulli is referred to by name.

In The Great Race, Cranky accidentally loaded a crate with Diesel in it into a boat after the devious diesel shunter's plan to enter the Great Railway Show was foiled.Frankie was now very unhappy, as now Hurricane was out of commission and the engines were about to leave them with no help at all. James and Lexi scolded her for all the trouble that she and Hurricane have caused, prompting Frankie to break down crying and admit that they only wanted someone to help with all the work, and no other engines were available. Thomas had an idea and said that he knew some engines who were not as busy as she thought: the experimental engines. Although reluctant at first, Merlin, Theo and Lexi agree to stay and help make deliveries.

Gordon Takes a Tumble | Henry and the Elephant | Percy Takes a Plunge | Thomas and the Special Letter | James and the Trouble with Trees | Spic and Span | Diesel from Thomas to the Rescue | Emily's Adventure Afterwards, Thomas encouraged Lexi (along with Theo and Merlin) to stay with Frankie and Hurricane and call the Steelworks their new home. Despite this however, Merlin is a very kind engine who shows a caring side for others. This is shown when he tried to rescue Thomas from the steelworks after Hurricane and Frankie manipulated him to stay putting peer pressure on Thomas. Annie and Clarabel | Henrietta | Old Slow Coach | Slip Coaches | Hannah | Dexter | Green Express Coaches | Emily's Coaches | Toby's Museum Coach | Flora's Tram Coach | Open-Topped Carriages Both Lexi and Kwaku are the only two steam engines in the CGI series to have visible smokebox doors, as unlike many of the other steam engines featured, their faces are not located on their smokeboxes.According to Michael White, Lexi may have been intended to appear in the twenty-fourth series double length episode, Thomas and the Royal Engine, but was dropped due to time constraints.

When Thomas travelled to the Mainland, he befriended the experimental engines: Lexi, Theo, and Merlin. Thomas encountered Lexi and Theo in an empty yard, where he was warmly welcomed and refilled with coal. Later, Lexi, along with the other experimental engines, helped Thomas rescue James, who had been trapped in the Steelworks. Series 16 - Percy and the Monster of Brendam, Thomas and the Rubbish Train ( cameo), Percy and the Calliope ( cameo), Salty's Surprise ( does not speak), Sodor Surprise Day, Emily's Winter Party Special ( cameo) and Happy Birthday Sir! ( does not speak) Early Bird ( does not speak), Henry's Happy Coal ( cameo), The Flying Teapot ( cameo in US version), Thomas' Tall Friend, The Fat Controller's Bedtime Story (Issue 644), Fish and Ships ( cameo), The Fat Controller's Bedtime Story (Issue 646), Blue Mountain Mystery, City of Truro and Playful Passenger! ( cameo) Cranky's crew can access him by a floor hatch underneath his body. This is also annotated in his concept art. Cranky also appeared in the magazine stories, Company for Cranky, Fish and Fog!, Fun With Friends, Sea-Bound Salty and The Camel Train.Hurricane was out of commission because of his melted wheels, and now Frankie was left to do everything alone. James and Lexi scolded her for all that she and Hurricane have caused, and Frankie began crying. She ends up admitting that she only wanted someone to help her and Hurricane, as there was too much work for just the two of them and they couldn't get any other engines to help them. Thomas got her to stop crying by saying that he knew that the experimental engines were free to help. Although Theo and Lexi were reluctant at first, Thomas and Merlin were able to encourage them to stay and help out, and so they agreed to, as did Merlin.