Definition: Martiodrilus is a fictional character from the science fiction novel "The Left Hand of Darkness" by Ursula K. Le Guin. He is an alien who possesses the ability to control and manipulate time, creating a parallel world where he can live forever. His existence is paradoxical due to his ability to travel through time, but it is also mysterious and unpredictable, as he has no memory of his own past or current life.