A new place with new friends

It was a nice day in the underground today, until something...unexpected happened. Who are these new humans? How did they fall down in the underground? But most importantly are they a threat? Are they nothing but a bunch of dirty killers?...Or are they friends?

This is my first story, quick warning but I do hope you still enjoy this as much as I enjoyed writing this. Also all characters belong to their respective owners and creators except for the two new humans