Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Sodam Yat is a fictional character, an extraterrestrial superhero published by DC Comics. He first appeared in Tales of the Green Lantern Corps Annual #2 (1986), and was created by Alan Moore and Kevin O'Neill. He operated as Ion, having become one of the most powerful characters in current continuity. Sodam Yat is a prophesied future member of the Green Lantern Corps, created by Alan Moore and is first mentioned in "Tygers", a story in Tales of the Green Lantern Corps Annual #2. He is mentioned in passing to Abin Sur by a demon named Qull of the Five Inversions, who had been imprisoned on the planet Ysmault by the Guardians of the Universe.