Caroline "Carol" Ferris is a fictional character appearing in the DC Comics Universe. She is one of many characters who has used the name Star Sapphire, and the long-time love interest of Hal Jordan, the Silver Age Green Lantern. In her role as Star Sapphire, Ferris has been active as both a supervillain and, more recently, as a superhero.

Hal Jordan, one of the characters known as Green Lantern, is a superhero appearing in American comic books published by DC Comics. The character was created in 1959 by writer John Broome and artist Gil Kane, and first appeared in Showcase #22. Hal Jordan is a reinvention of the previous Green Lantern who appeared in 1940s comic books as the character Alan Scott.