Jaqen H'ghar is a mysterious man - introducing himself as a Lorathi criminal - who was arrested and put in the dungeons of King's Landing, before being recruited by Yoren to join the Night's Watch. He is in Yoren's party as the latter smuggles Arya Stark out of King's Landing. He travels with them to the lands south of Harrenhal, where they are captured by Lannister forces. In reality, "Jaqen H'ghar" is just an assumed identity of one of the Faceless Men of Braavos, a feared order of mysterious assassins with the ability to change their appearance at will. After the Jaqen persona is of no more use to him, the Faceless Man shapeshifts into a new appearance. It is unknown whether this new appearance is his true one or just another assumed identity.