Kingsley Shacklebolt is a senior Auror who acts as informer for the Order within the Ministry of Magic. He is first introduced in "Harry Potter and the Order of the Phoenix", when he volunteers to be one of the members of the Advance Guard that escorted Harry from the Dursleys' home to Number 12, Grimmauld Place. Kingsley is in charge of the search for Sirius in the Ministry; however, knowing Sirius is innocent, he is supplying the Ministry false information that Sirius is in Tibet. He is present in the scene of the fifth book when Harry is confronted about Dumbledore's Army, after Marietta Edgecombe betrays it to Dolores Umbridge. Kingsley swiftly modifies Marietta's memory, but to avoid suspicion from the Ministry, Dumbledore is forced to hex him too as he flees.