*Princess Komand'r ("Blackfire" in American English) is a major villain of the Teen Titans, is the older sister of Starfire, who also hails from planet Tamaran. She debuted in the second season premiere, "Mr. Butt" but had no more lines until the fifth season. She is voiced by Hynden Walch, who also voices her sister.

Blackfire was always mean to Starfire her whole life, even back when they were little kids. When Starfire was five, Blackfire stole her favorite doll from her and although, Starfire always has been nice to Blackfire, Blackfire remained cold-hearted. At some point later in her life on Tamaran, Blackfire got arrested and got sent to galactic jail for unknown crimes against the galaxy.

Blackfire is a teenage girl with dark purple hair that is spiky at the bottom. She has dark purple eyes and pale white skin in contrast to Starfire's pale orange tone. She wears a black and silver two-piece dress with black gems on it.

She also wear long black and silver boots with black flames on the bottom. Though her skin is not normally visible, in "Mr. Butt", it is revealed that she wears dark purple nail polish and eyeliner. Blackfire can be seen painting Starfire's nails and eyelids respectively in that color.

Because of a rare illness she had as a child, this makes her noticeably "deformed" and as such, her people less favored her.

Her eyes and hands glow a bright lilac when using her greater energy-based powers of ultraviolet energy projection.

In stark contrast to her younger sister Starfire, Blackfire is vengeful, ruthless, and treacherous as she has never appreciated Starfire and has always bullied her since their childhood. She also doesn't regret denouncing Starfire for being her biological sister.

Furthermore, Blackfire is manipulative, willing to pretend to spend quality time with Starfire, only to betray her sister by allowing the Tamaranian Drones to arrest Starfire as a means to escape her imprisonment. She never realizes her crimes until she has to face the consequences, namely when Starfire punished her twice in both "Mr. Butt" and "Girls Night In".*