• Communication Ghosts can communicate with each other by ghostly letters. Nearly Headless Nick received one from Sir Patrick Delaney-Podmore of the Headless Hunt. Nick also must have used something of that sort to invite people to his Deathday party, too (CS8). The letters are transparent. Read More
• Creature Ghosts are an unusual type of magical creature. In some ways, they’re not creatures at all, but rather characters just like Harry, Ron, Dumbledore, and all the other living people. But they aren’t quite the same, of course; they are semi-transparent, non-corporeal beings. Only wizards can become ghosts, and then… Read More
• Organizations The ghosts’ council at Hogwarts is a group of ghosts including the House ghosts. They vote on matters that concern them. Read More