Copyright can sometimes cover the characters in a fictional work, so that another author using those characters in a different story can be an infringement. In

Copyright can sometimes cover the characters in a fictional work, so that another author using those characters in a different story can be an infringement. In the US there are a couple of things courts look at when deciding if a character can be copyrighted. One is how well delineated the character is. Another is whether the story is about the character or the character is just a means to move the story forward. Wikipedia has decent coverage of this here [1] if you want more detail. [1] https://en.m.wikipedia.org/wiki/Copyright_protection_for_fictional_characters#United_States https://en.m.wikipedia.org/wiki/Copyright_protection_for_fic...