Baal doesn't fear darkness and he isn't afraid of fear itself. He is afraid of very few things which is a good thing. One of the things he fears is Lord Khaos and Xander. He fears Xander because she represents the unknown. He isn't the only one that doesn't know much about her but that doesn't make him feel better because she is the very representation that ignorance can kill.
He was thinking as he flew but he had to stop. A wall suddenly appeared in front of him. It is strange because walls shouldn't appear suddenly and even if they do, they shouldn't appear in the air. He identified the wall to belong to a certain snake when he saw the glittering scales and the rippling muscles beneath it. The hissing he heard behind him all but confirmed his suspicion of who the wall is.
"What? Want to fight?" He asked her confidently.