Susan is a young Time Lord who fled Gallifrey with the Doctor in the TARDIS he borrowed. In human reckoning she looks to be in her late teens, although her eyes betray a knowledge far greater than that of the Earth schoolgirl she resembles. Her dark eyes, framed by arched black eyebrows and a shock of unruly black hair, have a distant, slightly disturbing look about them. Even for a Time Lord, however, Susan is too young to know much about the universe. She speaks with a posh British accent. 