Firestar (Angelica Jones) is a fictional character, a mutant superhero in Marvel Comics' universe. She has the mutant ability to generate and manipulate microwave radiation, which allows her to generate intense heat and flames and to fly. She has been a member of the New Warriors and The Avengers.

The character was originally created for the animated series Spider-Man and His Amazing Friends as a replacement for the Human Torch. Some fans claim that the decision was made because it was feared that children in the audience might get the wrong idea from the Torch bursting into flame every time he activated his powers. Later, she appeared in the comic books as well, beginning with Uncanny X-Men #198. Although she was initially a pawn of the X-Men's enemies, she quickly became a superhero in her own right. After a miniseries of her own, the character faded into obscurity until she became a founding member of the New Warriors. There, she became engaged to fellow teammate Vance Astrovik (aka Justice, formerly Marvel Boy); later, she discovered that her radiation powers were rendering her unable to have children. Firestar and Justice later joined the Avengers for a time; during this period, Henry Pym designed a costume for her that would prevent her powers from affecting her adversely.