Dumbledore is the founding member, having started the faction during the first war. There are returning members from the first war such as: Alastair Moody, Remus Lupin, and Sirius Black. There are also new recruits like Kingsley, Tonks, and the Weasley family. Teachers at Hogwarts like Hagrid, Snape, and Minerva also play parts with the Order.