Colin is the only character introduced in Series 12 to appear in another form of media; he is in the James Sorts It Out book from the Sodor Story Collection series and he also appears in one of the My Custom Engine books.

Flying Fish!, Crane Strain!, New Year Promise!, Harvey to the Rescue!, Cruise Control! and Revving Racers ( does not speak) Series 6 - Harvey to the Rescue, No Sleep for Cranky, The Fogman ( cameo) and Thomas the Jet Engine A Chinese tender engine who took part in the Great Railway Show in the Best Decorated Engine Parade. Colin was originally going to appear in King of the Railway, and the concept art of the film by Guru Studios shows that he would have been based at Ulfstead Castle. If this would had happened, then he would had become the only non-human character introduced in twelfth series to appear in full CGI.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) Cranky was the first non-Awdry character introduced in the television series who was not Railway Series-related with a freelance basis. Series 10 - Toby's Afternoon Off ( faceless, cameo), Seeing the Sights ( faceless, cameo), Edward Strikes Out ( faceless, cameo) and Thomas and the Treasure ( faceless, cameo) After the show's cancellation, his model was refurbished and modified with a warmer shade of grey paint, and his megaphone was removed. According to an interview with Sodor Island Forums, Cranky is one of Mark Moraghan's favourite characters alongside Percy. [5]

A tunnel boring machine who works for the Sodor Construction Company, and later the mines underneath Lookout Mountain. She was introduced in Series 23. Fun Fact: As Colin cannot leave the Wharf, the engines bring him news from around the Island. He’s always fascinated hearing about events that happen in other places. According to an SiF interview with Sam Wilkinson, Reg is a hybrid design of various diesel-powered rail-based cranes. Between Big World! Big Adventures! and the twenty-third series, Cassia received an update, which included the modelling of a new face to replace her original - which was cloned from Carly - as well as the removal of the name on her sides (though it can be visible from certain angles). She also became a slightly brighter shade of orange and lost most of her blue patches, with the stripes and handrails being exceptions, she also received rivets by her door.Although she has been named in various other pieces of media, the only episode to have Cassia actually referred to by name is the twenty-fourth series episode, " Thomas and the Forest Engines". Series 15 - Gordon and Ferdinand ( faceless, cameo), Toby and Bash ( faceless, cameo), Percy's New Friends ( faceless, cameo), Happy Hiro ( faceless, cameo), Up, Up and Away! ( faceless, cameo), Henry's Happy Coal ( faceless, cameo), Surprise, Surprise ( faceless, cameo), Stop That Bus! ( faceless, cameo) and Percy the Snowman ( faceless, cameo)

The Duke and Duchess of Boxford's silver streamlined tender engine from the Mainland and is Gordon's cousin.A grumpy green steamroller whose interactions with engines generally lead to trouble. Whenever he is flattening a road, he is seen rebelling by saying "Railways are no good! Turn them into roads! Pull 'em up! Turn them into roads!" Despite being bad-tempered and mean to the engines, he readily learns his lesson after the events of "Bye George!" Thomas & Friends: Boy overjoyed to voice new autistic character". BBC News. 7 September 2022 . Retrieved 7 September 2022. Although he has a serious and typically unflinching demeanour, Cranky has shown that despite his cynicism, he is able to have fun. However, he often attempts to hide signs that he is enjoying something to try and keep his grumpy image. These usually go fairly poorly, but on numerous occasions he actively chooses to join in the fun and not hide anything. Cranky was later unloading a crate from a ship at Brendam, but accidentally dropped the crate to the ground. Fearing the contents inside of the crate were broken, Cranky hid the crate out of sight, though it was later found and taken to the Town Hall. A green mixed-traffic diesel engine who primarily works on Edward's branch line and occasionally on the main line. He, along with Edward, is a mentor to Bill and Ben.