She is the daughter of Madame Rouge. In the Beast Boy mini-series, she sought revenge against Beast Boy for killing her mother, her insanity having twisted her mother's death as the deliberate fault of Doctor Caulder and Beast Boy when it was merely an accident. She attempted to frame Beast Boy for the murders of his former cast members in an old TV show. After being tracked down by Beast Boy, Gemini reveals the bound and gagged forms of Vicky Valiant and Tim Bender, two of Gar's old co-stars whom she intends to murder. She is thwarted by Beast Boy, Flamebird, and Nightwing. Subsequently, she joined her mother's old group, the Brotherhood of Evil. Her first mission with them was an arms deal with the Penguin in Blüdhaven, but they were defeated by Batgirl. In Infinite Crisis, Gemini became a member of the Secret Society of Super Villains. During the One Year Later crossover, Gemini rejoins the Brotherhood of Evil.
Rebirth
In DC Rebirth launched continuity, Gemini is pursued by Nightwing out of Blüdhaven for murdering former friends of hers. The Birds of Prey aid him in the chase. She praises a superhuman Blackbird, who has told her to cut ties with her friends and helped her develop her metahuman powers. Gemini falls victim to Blackbird's plan to drain metahumans of their powers. She returns to the Birds, Nightwing and Green Arrow for help, who defeat Blackbird.
Powers and abilities
Her powers are similar to those of her mother. She can take any shape she wishes at will, stretch herself like rubber and has an amorphous physiology. Currently, it is unknown what the limits of her powers are, though she seems to have a weakness to fire.
In other media
Film
Gemini was reportedly featured in David S. Goyer's script for an upcoming Green Arrow film project entitled Escape from Super Max. In the script, Gemini appeared as an inmate of the Super Max Penitentiary for Metahumans.
Gemini did eventually appear in issue #48 of the series as a member of the Brotherhood of Justice, an alternate reality version of the Brotherhood of Evil. She took on the identity of Starfire's evil elder sister, Blackfire, in order to infiltrate the Teen Tyrants.
