Sunstreak possessed solar-energy-based powers that were granted to her by unrevealed means. She can transform her body into a plasma-like state hot enough to burn her surroundings. She has great control over fire and can release a 2200 degree Fahrenheit (1200 Celsius) concentrated "Solar-Lance" blast from her hands.
While in her transformed state she can fly on he own accord. Her skin stays red-hot even in human form and flames cover the top of her head.
Sunstreak was once a member of the mercenary organization known as Stockpile. Along with fellow mercenaries Joust (Boudica Gorman), Calico (Pania Panapa), and Unicorn (Aaidan Blomfield), she was hired by Morgan Stark as part of his scheme to acquire the Iron Man armors developed by his illustrious cousin, Tony Stark. Through a robotic construct known as Brass, Morgan Stark directed Stockpile to break into the old Stark International Research and Development complex on Long Island, New York. After an altercation with Iron man and War Machine, Sunstreak and her allies were defeated. Most recently she was released from prison to take part in the Fifty State Initiative and began training at Camp Hammond.