Blackfire is a Tamaranean female student at Korugar Academy of DC Superhero Girls. She is Starfire's older sister. She was voiced by Hynden Walch who also voices her sister, Princess Bubblegum, Penny Sanchez, Wendy Darling, and Alice (Disney) in any other Disney games.
Blackfire has long flowing blackish purple hair, orange skin and violet eyes. She wears a black crop top and a black matching mini skirt with a sliver belt. She also wears metallic armor that covers her arms, legs, and stomach and wears metallic elbow-length finger-less gloves and black knee-high boots.
Blackfire is voiced by Hynden Walch in the English version of the cartoon, making her first appearance in the second movie; Intergalactic Games.
She appears as a member of the Korugar Academy team at the Intergalactic Games, where she holds a bet with Starfire, that if Super Hero High were to lose, Starfire would transfer to Korugar and if she were to lose, she'd spend a day of "fun-ship" with her sister; Starfire. In the end she helps her sister, alongside the rest of Super Hero High students to thwart Brainiac's on-going attack.
She spends a day of "fun-ship" with her sister; Starfire, helping to take down King Shark alongside Starfire, before heading back to Korugar via the Boom Tubes.