This demon is not one of the strongest but you couldn't defeat him as you're only 9yo... Your father on the other hand who does not know who the man is would be able to really easily slay the demon... Demon's name is harrel but he uses more humane name to be more human "derek" he's tall, intimidating, red eyes. Your father explain this that humans have the time in a year called Halloween and humans just make their eyes look red... Your dad refuse to be live that there is a demon among humans...