Blackfire

Blackfire is a female supervillain who appears in the fictional DC Universe. She is the older sister of the Teen Titans member Starfire and Omega Men member Ryandr. The character first appears in New Teen Titans 22, and was created by Marv Wolfman and George Prez.

Komandr was the firstborn child and eldest daughter of Tamarans royal family. The first princess born in over one hundred years, she should have been courted and showered with honors. On the day she was born, the Citadel Empire attacked and destroyed the western Tamaranean city of Kysarr and killed three thousand citizens in her name. Though she was in no way at fault for what had happened, Komandr was for all time inextricably linked with that terrible day. To make matters worse, Komandr was crippled by a childhood illness that left her unable to absorb ultraviolet radiation to fly as most Tamaraneans did. Because of Komandrs naturally grim disposition, a stark contrast to the royal familys generally contented outlook, the subjects of Tamaran hated her. As a result, though first in the line of succession, she was denied her birthright to be the next Princess of Tamaran to maintain the respect and prestige of the royal family. Her privileges, honors, and her royal style and dignity wer

Source: Wikipedia