Firestar

Angelica "Angel" Jones is the mutant heroine known as Firestar! She has the ability to generate and manipulate microwave radiation, which allows her to generate intense heat and flames, and to fly. She was taught to use her powers by the then-villainous Emma Frost, before joining other teen heroes as the New Warrirors. Eventually, she and her then-boyfriend Justice (Marvel) left the team and joined the Avengers.

Firestar was diagnosed with breast cancer which was attributed to long-term exposure to her own power. Though the cancer is now in remission, she has generally retired from being a superhero, now training Gravity and the Young Allies, occasionally going into action when needed.

Unusual for most comic characters, Firestar was created for the Saturday morning cartoon series, Spider-Man & His Amazing Friends, and later adopted into the Marvel Universe comics.

Earth's Mightiest
Firestar was defeated by Mockingbird in the opening round.