Although KT21 was a veteran Green Lantern, she had never intended to serve the Corps for so long. Like some fellow Lanterns, KT21 maintained a civilian identity on her home world Jerome.
KT21 was pregnant when she was inducted into the Corps, and has had to raise her son B.J. while acting as both a Green Lantern, single mother, and professional glass blower. Many years ago, the Guardians of the Universe promised KT21 that they would appoint a successor to Sector 181 when her son was born. They never commissioned a replacement, so KT21 learned to care for both her family and her Sector at the same time.
In her first appearance, KT21 is called away to apprehend a group of raiders who were working on behalf of the Warlord Poml. Trapped within a yellow containment bubble, KT21's air began to run out and her ring was powerless to break her free from the yellow prison.
The raiders left KT21 to suffocate but the Green Lantern quickly thought of a plan to escape. Before she left home, KT21 placed B.J.'s glass blowing toy in her pocket. Unlike her yellow prison, the red glass was not immune to her rings power. KT21 blew a huge red bubble inside of the yellow sphere she was trapped in, covering over the yellow glass with a red tint. KT21 blasted through the newly colored bubble and quickly rounded up the raiders before they could flee Jerome with their stolen goods.
KT21 would continue to serve the Corps during the multiversal Crisis on Infinite Earths. When the Crisis had passed, the Guardians of
the Universe were disturbed over their internal strife and failure to foresee the coming of the Anti-Monitor.
They decided to leave this plane of existence to meditate. Before doing so, the Guardians engineered a massive operation within the Corps to apprehend those criminals who had escaped from the Oan Sciencells during the Crisis.
KT21 partnered with Medyphll to capture Plasma Fig, the villain who had murdered the Green Lantern Sandro Batorn. According to Plasma Fig, KT21 distracted the killer while the silent Medyphll snuck up and apprehended him. The two Lanterns deposited their prisoner back to the Sciencells, and joined the Corps gathering on Oa to mark the Guardians' journey.
Presumably, KT21 continued to serve the Corps through the first and second destruction of the Central Power Battery. When the Corps reformed, KT21 resumed her role as Green Lantern. She was on the front lines in the battle to stop Superboy Prime from destroying Oa, and fought in the Sinestro Corps War. When KT21 learned of the Sinestro Corps witch Kryb and her sick fascination with the children of Green Lanterns, she joined Amnee and Matoo Pree in their search for the monster. The trio were later joined by Kyle Rayner and Soranik Natu, who had uncovered a lead as to Kryb's whereabouts.
Kryb held her own against four Lanterns, but was eventually defeated. Although Rayner ordered his team to stay with Amnee, who was now in full labor, KT21 reasoned that the only way to protect their children was to make sure Kryb was dead. She lit her ring and raced off to aid Rayner in battle.
Together, KT21 and Rayner fought Kryb in a vicious battle. The alien witch was aware that Amnee was giving birth and the smell of the child drove her to fight on relentlessly. The Lanterns were aided by the unexpected arrival of the Star Sapphire, Miri Riam, who was alerted to the fact that a Sinestro Corps soldier was threatening a "great love." The added firepower she brought was just enough for the Lanterns to subdue Kryb.
A Battle For Lost Children
While Kyle was preparing to transport Kryb to prison on Oa, KT21 vehemently protested, arguing that Kryb needed to be
put down for good. The children of Lanterns, like Amnee's newborn daughter and her own son, would never be safe as long as Kryb lived. Kyle refused, arguing that they were Corps and not executioners, but KT21 would not listen. She turned her ring on Kyle and Miri, blasting them away from their prisoner. KT21 then stood over Kryb and pressed her ring to the vile hags skull, intent on destroying her once and for all. KT21 was desperate and fearful for her son's safety, and Kryb took advantage of that fear to take the life of one more Green Lantern.
Without warning, the latice-like hump on Kryb's back opened up like the fingers on a clawed hand. These claws grabbed KT21, tearing her apart as she was pulled head-first into Kryb's hump. With a blast of his ring, Kyle quickly bound Kryb before she could escape, but the damage was done. KT21 was dead and her ring left her hand to find a replacement in Space Sector 181. Kyle constructed a coffin for KT21's body and transported the Fallen Lantern to Oa. There she would be entombed in the Crypts of Oa and honored alongside her fellow Corpsmen. The fate of KT21's son B.J. is unknown.
Powers and Abilities
KT21 wields a Green Lantern power ring, which gives her several very formidable abilities and tactical resources:
- Emotional Spectrum Green Will Energy Conduit: The rings use pure energy supplied by a Power Battery, which in most cases takes the form of bright green light. This energy is the green light of willpower of the Emotional Electromagnetic Spectrum. A Green Lantern's ring, considered by some to be one of the most powerful weapons in the known universe, has the ability to affect and use fundamental forces of the known universe, including electromagnetic energies such as gravity, radiation, heat, light, and powerful blasts of concussive force. It is also theorized that the ring also has a basis in other dimensional energies commonly called magic by users of such energies. The ring can also create fields of force formed from an unknown energy that is bound by the users' will. The limitations of such use are the skill, knowledge and imagination of the user.
- Energy Projection: The ring can be used to fire blasts of energy or create weapons such as projectiles of them. The ring can project beams of force powered by the will of the user. Their appearance does not indicate the power of the weapon. The weapon's power is more an indication of the will of the user.
- Force Field: The ring can create various force fields of various sizes and shapes to protect the wearer and others in the vicinity. With the cosmic scope of a Green Lantern's duties, it is only natural that the power ring is designed for operation in space. The ring creates a force field around the wearer, protecting them from the hazards of the void including filtration of stellar radiation and microscopic particulate matter which would ordinarily be fatal should the space debris strike the ring wielder at high speeds. An atmosphere appropriate to the ring wielder's biology is created inside the force-field while body temperature is maintained and waste products are removed. Gravitational stresses which could cause injury are stabilized for the ring wielder. Theoretically, a ring wielder could use the ring as their sole source of life support. The force field is created instantaneously whenever needed as part of the ring's automatic defensive system.
- Energy Constructs: The primary function of the power ring is to provide a weapon capable of transforming the wearer's thoughts into physical constructs through the wearer's strength of willpower. A Green Lantern can create any particular items or construct that they can imagine as long as they have the willpower necessary to will it into existence. The constructs exist only as long as a Green Lantern is fueling them with their willpower. Items created by the rings are not indestructible and are only as powerful as the willpower of the Green Lantern creating them. The types of constructs usually reflects the ring wearer's personality.
- Phasing: The power ring allows the wearer to pass through solid objects such as walls, though this is also a function of the ring-bearer's will and not an automatic ability of the ring itself.
- Environmental Playback: Upon request, the power ring can recreate a holographic environment based on data in its memory banks. The ring-bearer can observe events in a ghostlike state, but the cannot alter the outcome of the playback. All objects in the playback will appear in the full spectrum of colors, regardless of the wielder's level of expertise creating simulacra. The power ring will automatically end the playback if outside interference warrants the ring-bearer's undivided attention.
- Invisibility and Light Refraction: A ring-bearer can render themselves invisible by willing the ring to bend light waves around their body. A similar action allows an experienced ring-bearer to create objects of colors other than green, even simulacrums of living people.
- Energy Absorption: The ring can absorb and store other energies. Doing so does not replenish the normal store of energy the ring has. For example: a ring that needs recharging but contained a store of electricity could only discharge that electricity.
- Superhuman Strength: While not super strength of the conventional sense, a Lantern, while using constructs created by the ring, becomes capable of lifting/moving tremendous weights far heavier than they would normally be able to with comparatively little effort.
- Flight: By the manipulation of anti-gravitons and directed molecular movement, the ring allows the user to fly at incredible speeds. In atmosphere, a Green Lantern has been known to fly as fast as Mach 10 in atmosphere by creating an aerodynamic envelope around their body. In space, a Green Lantern's flying ability has been shown to reach velocities far exceeding light speed. In atmospheres, air friction is not a hindrance since heat is either absorbed or reflected by the ring's field.
- Wormholes and Spacial Warps: The power ring grants its bearer access to wormholes in space, enabling a Green Lantern to rapidly cut the time and distance needed to respond to an emergency. Black holes can also be navigated by experienced ring wielders. A Green Lantern can travel through a black hole to be deposited outside a white hole in a far off sector of space.
- Time Travel: Time travel is possible with the power ring, though the further forward in time a ring-bearer travels, the more willpower it takes.
- Limited Cellular Regeneration: A Green Lantern can use their ring to heal physical injuries in their self or others.
- Electromagnetic Scanning: The ring has a wide range of detection abilities based on the imagination of the user. If the ring-bearer can conceive of it, they can probably detect it. Most normal electromagnetic phenomena are within the range of the ring, including radio, radar, television, infrared, ultraviolet, microwave, and high frequency band communications.
- Thought Relay: Otherwise known as a telepathic link, which can be used to coordinate tactics with other Green Lanterns or report of the status of an active mission to a sector partner or other Lantern. The links can also be established with non-Green Lanterns, though it requires more willpower.
- Galactic Encyclopedia: The earlier rings worn by the Corps functioned as references for their bearers. Having the vast knowledge of the Book of Oa to draw upon, each ring functions as a ready reference on most peoples, stellar events and conditions that may have been seen by other rings or other Green Lanterns.
- Universal Translator: The power ring can translate virtually any language in the universe, facilitating diplomatic encounters rather than violent confrontations. Complications arise when a frame of reference for translation is not available, as evidenced during Katma Tui's induction of Rot Lop Fan into the Green Lantern Corps. Katma Tui had the difficult assignment of explaining the concepts of "light" and "color" to the sightless Rot Lop Fan. She overcame this barrier by using sound rather than light as the basis of the ring's power. Some Green Lanterns, such as the planet form known as Mogo, have used the ring to create an intermediary "being" to expedite communication.
- Material Alteration: The Green Lantern's uniform is not made out of fabric. It is created by the power ring whenever the ring-bearer wills to wear it. Most Green Lanterns wear similar uniforms that are programmed into the ring by default. However, each Green Lantern is able to adjust their uniform to fit their own needs, personalities, or whims. The green parts of the wearer's uniform are usually very warm or hot to those who touch it, while the black parts are very cold. The uniform also produces a "siren" taking on the form of the Green Lantern Corps' symbol, circling the Green Lantern when active. The symbol, or badge, will not appear on the uniform until after a newly inducted Lantern has completed training on Oa, leading to the term "White-Circle" to describe a rookie Lantern.
- Ring Duplication: A power ring is capable of duplicating themselves. Each duplicate shares the qualities and capabilities of the original ring. The duplicate rings are subject to over-ride control by the original ring-bearer, and take a significant expenditure of energy to create.
- Emergency Beacon: A Green Lantern in distress can use their power ring as an emergency beacon. The alert can be directed to a Green Lantern's neighboring sector, or it can be a Corps-wide alert.
- Homing Beacon: A homing beacon in the power ring can lead one Green Lantern to another. Though a power ring can be ordered to disguise itself to elude power ring wielding trackers.
- Mind Alteration: Though the ethics of mind tampering may be debatable, sometimes it is deemed necessary. As the power ring relies on thought and will to operate, mind tampering is not impossible. The real difficulty lies in properly applying the power. There lies a risk of severe damage to the mind where alterations are being attempted should mistakes be made. A ring-bearer can use the power ring to erase portions of an individual's memories. Green Lanterns have used mind techniques as part of training. New recruits may be subjected to mind scans by other Green Lanterns or the Guardians of the Universe. They are taught to build mental defenses to protect themselves from mental attack. The power ring can also be used to beam information from the ring wielder to another being. Green Lanterns have used this technique to share information regarding their enemies during combat situations.
- Pocket Dimension: A ring-bearer can use their ring to create a small extra-dimensional holding space in which they can store their power battery for ease of retrieval. These pocket dimensions can be accessed from any location.
- Security Protocol: The rings can be programmed. They are coded to the wearer to make them unusable if stolen. The ring will refuse to take an action that would kill a being unless they are on Oa or have obtained permission. The Guardians recently removed the lethal force prohibition, first to allow lethal force against members of the Sinestro Corps, then against all enemies of the Green Lantern Corps.
- Preset Conditions: Commands can be stored in the ring to be executed at a later date even if the bearer is not wearing the ring.