Jean Grey is one of the founding members of the X-Men, created by writer Stan Lee and artist Jack Kirby. She first appeared in X-Men #1 in 1963. Initially known as Marvel Girl, Jean was a telepathic and telekinetic mutant who joined Professor Charles Xavier's team of superheroes to fight for mutant rights. Her early stories often showcased her struggles with her abilities and her unrequited love for Cyclops, one of her fellow X-Men. As her character evolved, Jean became the host of the Phoenix Force, dramatically increasing her powers but also risking her loss of humanity. This transformation led to the iconic 'Dark Phoenix Saga,' where she struggled against the force controlling her, resulting in catastrophic consequences for herself and the universe. Over the years, Jean has faced numerous challenges, both external and internal, often grappling with her identity, powers, and morality. Through various iterations across comics, animated series, and films, Jean Grey has remained a central figure in the X-Men and a symbol of both empowerment and tragedy.