Writing Prompt - Vampires who don't know shit<<--- Previous pinners comment. Personally, not much of a vampire person, but I think this would be really funny if done right. XD << Or just immortals in general. It doesn't even have to be strictly vampires.
Writing tips: If you're struggling with writing a character, write 20 things that the reader will never know about your character. These will naturally bleed into your writing and provide a richness even though you don't share the detail.