Firebird (Bonita Juarez) is a superhero character appearing in American comic books published by Marvel Comics. Created by writer Bill Mantlo and artist Sal Buscema, she first appeared in Incredible Hulk vol. 2 #265 (August 1981). At various points in her history, she has adopted the aliases of Pajaro Del Fuego, Firemaiden, and La Espirita. Firebird has associated with high-profile superheroes like Hank Pym and Hawkeye and been a member of the Rangers, the Avengers West Coast, and the Secret Avengers.

Firebird has been described by critics and commentators as one of Marvel's most notable and powerful female heroes, and a prominent Latina character.

Bonita Juarez debuted as part of the superhero team the Rangers in the story "You Get What You Need!" in Incredible Hulk vol. 2 #265 (August 1981), created by writer Bill Mantlo and artist Sal Buscema. She appeared in the 1985 West Coast Avengers series. She appeared in the 2009 Deadpool: Merc with a Mouth series. She appeared in the 2012 Scarlet Spider series.

Bonita Juarez is a Mexican-American woman born in the fictional town of Buena Vista outside Albuquerque, New Mexico. A devout Roman Catholic and social worker, she was walking in the deserts outside her hometown when she came into contact with a radioactive meteorite fragment. The radiation altered her DNA and gave her the power to generate fire and fly. Believing her gifts came from God, she assumed the mythical bird's name and donned a costume.

As Firebird, she received a distress call from the Avengers and mistakenly battled the Hulk. She joined with other Southwestern heroes (forming a team called the Rangers) and fought the Corruptor, rescuing Rick Jones in the process, who had actually sent the signal.

Firebird was alone when she fought against Master Pandemonium. Exhausted from her battle, she fell to the ground near the new Avengers Compound on the West Coast, where she was found by the Thing. She enlisted the aid of the Avengers in battling Master Pandemonium. She subsequently assisted the Avengers in several adventures, desperately seeking their invitation to join; however, their chairman Hawkeye remained oblivious, since he was trying to recruit the Thing.

Firebird accompanied the Avengers to the dimension of the Cat People. She battled her former teammate in the Rangers, the possessed Shooting Star, alongside the Avengers. She also faced Master Pandemonium again.

When Mockingbird discovered Firebird's desire to join, she tried coaxing her husband Hawkeye to invite her, but he continued holding out for the Thing (who did eventually decide to become a member, but ultimately backed out before making it official). Frustrated, Firebird left on a spiritual journey. Hawkeye later changed his mind, and the Avengers sought out Firebird but could not find her.