Train Eater

Description
The Train Eater is a train shaped being with many eyes at its sides and a large mouth at the front with another creature inside controlling it. Its length can vary depending on how many victims it has devoured. It only lives in train tunnels that goes underground to prevent it from being seen easily but outsiders while it's digesting its victims. They like peak hours since it can devour much more people at a time. It that is capable of modifying it's body to look like any type of subway train. This includes features such as windows, doors, seats, handles, and lighting. It can also imitate the sounds that a normal train would make such as gear sounds, steam sounds, and even the train announcements. People who went in and mistake it for a real train would not notice anything at first until the doors closed that's when the train becomes The Train Eater. It has impenetrable tissue making any victims inside nearly impossible to escape. Stomach acid will start to excrete out of the walls, floor and ceiling causing the victims trapped inside to get digested. This digested food would be used to provide it with energy and extend its length overtime. This process is done quickly before heading to the next station and it turns back to a regular subway train again.