encroacher (noun)

1. In the movie, the encroacher invades the peaceful village and wreaks havoc.

2. The encroacher's menacing presence in the haunted house adds to the horror of the story.

3. The encroacher from another planet threatens the existence of humanity in the science fiction novel.

4. According to the ancient religious texts, the encroacher was an evil entity sent to test the believers' faith.