The first tank engine produced by JasLine Works was not a replica of any previous class, however it was an idea of what a tank engine should be. This specific model is called the JC, or known by its nickname, 'squeaker'. This locomotive is only called this in factor with when it first got steamed up, the whistle made this squeaking sound. It was almost like someone hitting a voice crack. The JC is meant for shunting, however it has a unique ability. It can go from 0-60 in about 3 seconds after a proper steaming, this is only really relevant when you consider what it will be used for. The term that was created was 'Quick Shunting'. A brutal idea if executed incorrectly, this term was made from this very locomotive, as from its boiler it can produce heat so hot that steam can immediately get the locomotive going. This design is experimental and in 2027 it did get a huge makeover to help with any flaws. Out of all the locomotives made by JasLine, only 3 are custom designs, all starting out with some flaws and special capabilities.
Same peeps as last time, MY FRIENDS!!! But ummmm to LocoPerson for the sort of inspiration (I actually used no references other than "0-4-0 british locomotives" on google images and looking that over for 13 minutes. (No music cuz I didn't have any that sounded good for this that wasn't somebody else's theme... and uhh I ain't no artist in tune TvT)