Shane could be an individual with a passion for the macabre. In the context of 'Shane telling scary stories', he or she is the storyteller. Maybe Shane grew up hearing scary stories himself or herself and decided to carry on the tradition. He or she might have a collection of age - old tales, or perhaps create their own original scary stories to share with others.
Casey Jones in this context was perhaps a person who had a strong bond with the railway world. He might have been someone who found meaning and purpose in his railroad - related activities. In the love story, he could be the protagonist whose love, whether for a person or his job, was the driving force of the narrative. He was probably known for his skills and tenacity in the railroad field.
One interesting Shane Acker fanfiction could be about exploring the backstories of the characters in his works in more depth. For example, delving into the childhood of a character and how it shaped their actions in the story.
Another place to check could be fanfiction.net. It has been around for a long time and has a wide range of fan - created content. Just search for Shane Acker in the search bar, and you might discover some interesting reads.