Though she is Starfire's older sister, the two are nothing like eachother. Blackfire loves thrills doesn't seem to be remorseful about anything she's ever done. The two don't exactly get along well, as Blackfire is constantly trying to, in some way, do away with Starfire. Blackfire loves getting even her sister, and not just hurting her, but rubbing in the fact that she is older and stronger in her little sister's face.
Background
Blackfire first appeared when she arrived on Earth in the episode Sisters. She gave Starfire a jewel and pretended to enjoy being reunited with her. Blackfire won the Teen Titans's support by having fun with them and telling them stories of adventures she had throughout her travels in the galaxy. The Titans seemed to like her so much, Starfire was beginning to think they wouldn't need her around anymore. She was especially unhappy with her sister's attempts at flirting with Robin. When Starfire thought of leaving Earth, the Centauri Police showed up and captured her.The Titans rescued her and explained to the Centaurians that they have captured the wrong Tamaranean. Blackfire, who was leaving Earth at that exact moment, was stopped and defeated by Starfire.
Blackfire, when she first arrived on Earth.
Blackfire later broke out from prison and took control of Tamaran as its new Grand Ruler. Blackfire attempted to get revenge on Starfire by forcing her to marry Glgrdsklechhh, a hideous alien blob. This was actually part of an elaborate plot between Blackfire and Glgrdsklechhh; by marrying Starfire to Glgrdsklechhh, he would reward Blackfire with a very powerful jewel. When her plan was uncovered, Blackfire was once again defeated by Starfire and banished from Tamaran.
Blackfire was one of the only villains missing from the lineup of the Brotherhood of Evil, suggesting that she was not out to get all the superheroes, or even the Titans, but simply to just take out Starfire. It is also possible she still sits in jail, this time in a prison that can hold her.
Blackfire appears a few more times in the comics. In Issue #7, she return apparently reformed and challenges Starfire to a race. However the whole thing is a trap to dispatch the Titans and take revenge on Starfire, however she is figured out and flees the planet.
She appears again in #36 as leader of the Gordanians (the same aliens from the episode "Go!") and uses them to capture the Titans and their allies. The plan's thwarted when the few remaining managed to sneak aboard her ship and she was defeated by Wonder Girl.
Her final appearance is in #46 where it is revealed that she sent Madame Rouge into the Teen Titans' base disguised as Wildfire (Starfire and Blackfire's younger brother). After Starfire discovers this deception, she confronts Blackfire in her prison and renounces her as her sister. It also in this issue we learn about their past and that it was Blackfire who had given Starfire to the Gordanians as a bargaining chip to keep them from invading Tamaran, indirectly setting up the event in "Go!" and the subsequent forming of the Teen Titans.
Superhuman Strength: Being a Tamaranean, Blackfire is much, much stronger than she looks. She could damage Cyborg's mechanical hand with just a simple handshake. In "Betrothed", She seemed to be physically stronger than Starfire, but it is
unknown if that strength came as a result of the Jewel of Charta.
Flight and Blackbolts: She is able to fly and shoot more concentrated starbolts than Starfire, thus they are purple (because they're more powerful), and are called "blackbolts" instead of "starbolts".
Alien Martial Arts: She demonstrated some alien martial arts to Robin in her first appearance.
Character Facts
In the comics, Blackfire has the same hair color and eye color as Starfire. File:Df.png
Blackfire's resemblence to Starfire
Blackfire is the only Tamaranean in the comic that could not fly; however in the animated series she can fly.
Blackfire is much more lethal in the comics.
In the comics, Tamaranians were able to fly due to their absorbing of ultraviolet energy. Starfire and Blackfire were subjected to an experiment to see how much ultraviolet energy they could hold. They were freed, but the experiment altered their physiology to allow them to concentrate the ultraviolet energy into Starbolts. However, Blackfire was subjected to the experiment longer than Starfire, therefore hers were purple and far more intense. This made them the only Tamaranians capable of creating Starbolts while the cartoon implies that all Tamaranians could do so.
It is unknown how Blackfire learned English, but she seems to be able to speak English in a much more natural way than her sister, implying that, since Starfire only kissed Robin to get a grip on the English language, Blackfire during her visit to Earth has probably kissed a lot of boys to get such a grip on the language.
Both Blackfire and Starfire were voiced by Hynden Walch.
Blackfire is a playable unlocked character in the video game, but she has no dialogue.
Blackfire was one of the villains that didn't join the Brotherhood of Evil.
