Donald and Douglas are Scottish twin engines. They are practical, peppery, proud and level-minded, but, despite their maturity, they enjoy playing practical jokes. They are fully capable of being firm with the other big engines, such as Gordon and Henry as they know better than to try to test their patients.  Donald tends to be the charming, witty joker whereas Douglas is the quick-thinking, calmer-natured one of the pair. Both display a keen sense of wit and the pair usually get to have the last laugh, more often taking the moral high ground. But that does not mean they will not be just a little bit smug about it when a deserving engine meets their comeuppance.

This is a more multi role for at least 2 different people to audition for due to the twins have voices that separate them, for Donald I'm looking more for Michael Angelis' but more Scottish, as for Douglas I'm aiming for Joe Mills when he worked on the official series of Thomas and friends.

Examples: (Donald) https://youtu.be/Y79k9ymNeXg?si=ejA6aXhInZdvpwlo (Douglas) https://youtu.be/bo6EhwS_D4s?si=l9b1I0HaQzBsGrme