Jean Grey, also known as Phoenix, is a fictional superhero appearing in American comic books published by Marvel Comics. She first appeared in X-Men #1 (1963) and has since become a prominent member of the X-Men team. Jean Grey possesses telepathic and telekinetic powers, making her one of the most powerful mutants in the Marvel Universe. As Phoenix, Jean Grey has the ability to manipulate matter on a molecular level and can create powerful energy blasts. Her character is complex and has been both a hero and a villain in various storylines.