What is the name of the main characters biggest fear?

The main character in the story is named Jack. He is a young man who is afraid of spiders.

The main character's biggest fear is spiders. He is terrified of them and avoids them at all costs. He has a vivid imagination and often imagines spiders crawling under his bed or in his closet. He also avoids going outside at night because he is afraid of being chased by spiders.