Original continuity Luornu Durgo, codenamed Triplicate Girl, first appeared in
Action Comics #276, written by Jerry Siegel. She originates from the planet Cargg, which orbits a
triple star system, with all Carggites being able to split into three identical bodies. Luornu is the fourth hero to join the Legion of Super-Heroes and its first non-founding member. One of her three bodies was killed by
Computo, a rogue robot created by
Brainiac 5, with the remaining two becoming known as Duo Damsel. Duo Damsel later donned a unique half orange, half purple costume which could divide with her, leaving each duplicate with a costume of one color. In later appearances, Luornu and
Bouncing Boy marry and leave the Legion due to a law that prevents members from being married. The two become instructors at
the Legion Academy. Luornu suffered the death of one of her two remaining bodies battling the
Time Trapper. It was revealed that Luornu's second body was still alive. This body, and the ability to duplicate herself, were restored to her, and she gained a new ability to generate force fields. This new ability was transferred to her by a special force field belt created by Brainiac 5 to protect her after the supposed death of her second body. During the "Five Year Gap" following the Magic Wars, Earth falls under the control of the
Dominators and withdraws from the
United Planets. A few years later, the members of the Dominators' "Batch SW6" - temporal clones of the Legionnaires - escape captivity. After Earth is destroyed in a disaster reminiscent of the destruction of
Krypton over a millennium earlier, a few dozen surviving cities and their inhabitants reconstitute their world as New Earth. The SW6 Legionnaires remained, and their version of Triplicate Girl assumed the code name
Triad.
Zero Hour reboot A new version of Luornu is introduced following
Zero Hour: Crisis in Time!, which reboots the Legion's continuity. This version's bodies possess distinct personalities, which is not common among Carggites and considered a defect. As such, her father left when she was a young child, and her mother became alcoholic and eventually committed suicide. Luornu was raised by her grandmother, who secretly had the same condition. Following her grandmother's death, Luornu was placed in an asylum, where she was tormented in an attempt to make her act normal. After she began to show signs of "progress", Luornu was allowed into the asylum's garden, where she escaped by climbing out of the garden. Luornu later encountered
R. J. Brande, who employed her at his office and became her legal guardian.
"Threeboot" In the "
Threeboot" continuity, Luornu Durgo is the only inhabitant of the planet Cargg. Her origin is a mystery. All she recalls is waking up alone amongst the ruins of her planet. After weeks of loneliness, she discovers that she has the ability to create large amounts of clones, with each having a shared consciousness. When a United Planets craft arrives on Cargg, three of the replicates are sent out as emissaries. When they return, the other replicates consider them "tainted", because they had differentiated themselves from the other clones through their experiences. The three were exiled and join the Legion as Triplicate Girl. At the conclusion of "
The Lightning Saga", a shadowy figure appears to
Karate Kid as he prepares to return to the 31st century with his fellow Legionnaires, and tells him that he still has a mission to complete. This figure is revealed to be Luornu Durgo, who is now known as
Una and joins Karate Kid on his mission in the past. Karate Kid later contracts an unknown illness, which he investigates alongside Una.
Elias Orr tells them that Karate Kid's illness is similar to the
OMAC virus and suggests that they see
Buddy Blank. Karate Kid and Una meet Blank and his grandson, who take them to see
Brother Eye. It scans Karate Kid and directs the group to
Blüdhaven, where it detects a similar viral strain. Shortly afterward, Brother Eye transforms Una into an OMAC, who mortally wounds Karate Kid. Upon Karate Kid's death, the
Morticoccus virus in his body is released and enters the atmosphere, turning humans savage and mutating animals into anthropomorphic forms. Una helps Blank retrieve his grandson and sacrifices herself to defend the two from mutated rats.
Legion of 3 Worlds In the final issue of
Final Crisis: Legion of 3 Worlds, Luornu returns to assist the Legion in battle with the Legion of Super-Villains, revealing that she has gained the ability to create vast numbers of duplicate bodies and now goes by the name "Duplicate Damsel". The version of Luornu who previously died is revealed to be the last of her original duplicates.
DC Rebirth In
Doomsday Clock,
Doctor Manhattan is revealed to have altered the timeline of the DC universe, erasing Triplicate Girl, the Legion of Super-Heroes, and the
Justice Society of America from existence. The two groups are resurrected when Superman convinces Manhattan to restore the timeline. In
Brian Michael Bendis'
Legion of Super-Heroes reboot, the character is reimagined as possessing a pink, yellow, and blue color scheme. ==Powers and abilities==