Supergirl

Kara Zor-El, also known as Supergirl and Kara Kent, is one of the major characters from the DC comics.

Kara is Superman's cousin and last survivor of Krypton's Argo City. She has a brash and defiant personality that she developed in response to the destruction of Krypton. Currently, she is operating out of National City alongside the D.E.O.

Personality
Kara was a kind, sweet, compassionate girl when she still lived in Krypton. However, the circumstances of her arrival on Earth (being placed in suspended animation by her father and waking up two decades later to find herself stranded in an alien world long after her planet was gone) soured her character, which Superboy noted when he time-travelled.

For a long while she was depressed over her situation, feeling alone, friendless and unable to fit in Earth or somewhere. She was still a good girl at heart that tried to help people, but after several months of endless battles and conflict she was downcast and above all very, very mad. So mad that she became a Red Lantern.

However, her time in the Red Lantern Corps served as a catharsis which helped her pull through. After losing her Red Ring Kara was still troubled but she was more optimistic and good-natured, and she made a real effort to fit in, make friends and become a hero. When she starts working for the D.E.O. she has become the kind of hero who will beat criminals up but also try to help them. Thus she ended up a lot like the girl she was on Krypton.

Kryptonian Abilities

 * Flight:  Like her Kryptonian cousin, Supergirl has the ability to fly at great speeds, it has been shown that is able to fly at the speed of light, on one such occasion she has been seen to fly through the moon.
 * Super Hearing:  Supergirl has the ability to detect and interpret dissipating sound waves, this means that she is able to hear even the quietest of sounds from a large distance away, meaning that she can pinpoint a single person in the world just from their voice or heartbeat, this is done by filtering out every other sound in the world. Supergirl can also detect sound waves at a higher or lower frequency than a normal human ear can usually detect, this ranges from sub sonic wavelengths to radio waves.
 * Healing:  Supergirl is not totally invulnerable and has a powerful healing factor.
 * Heat Vision:  Supergirl has the ability to generate intense heat from her eyes, this heat is then focused and projected in the form of beams of radiation, which can be used to melt steel structures or heat up cold coffee, meaning that she can control the temperature of these beams.
 * Invulnerability:  In the New 52 it has been shown that Kryptonians under the yellow sun aren't entirely invulnerable. Although bullets won't harm them, sufficient amount of force and a sufficiently powerful electric shock can. The costume that they wear is actually armor which itself is theoretically invincible.
 * Super Breath:  In the New 52 her Super Breath has only been shown that she can hold her breath for a sufficient amount of time in space.
 * Super Strength:  The exact magnitude of Supergirl's strength is unknown, she was easily able to knock down armored weaponized robots only with minimal strain and when she hits Superman, it actually hurts him and he notes that he's never been hit that hard before. She can lift 100 tons with minimal effort.
 * Super–Intellect:  Supergirl was born into a society hundreds of years ahead of Earth. She lived there for about 15 years and learned much of the technology. Krypton was ruled by the Science Council and it was a huge part of their daily lives. Though in the New 52 it not shown if she still possesses it.
 * X–Ray Vision:  Can see through anything except lead.
 * Super Speed:  As like Superman she can move unbelievably quickly, albeit not as fast as other speedsters, or those that possess the speed force.
 * Solar Bomb:  In the New 52, Kara has recently shown the ability to release the solar energy within her like a bomb, an attack which has proved powerful enough to hurt Wonder Woman. She can use the same ability to a lesser extent in order to raise her body temperature to incredible levels and, more prosaically, to turn herself into a living torch.

Red Power Ring
After Krypton Returns, a Red Power Ring chose Kara. She has been shown to be able to charge the ring when depleted with her Rage. However she is more prone to violent outbursts and has a hard time controlling The Ring.
 * Acid: She has the ability to expel a fiery acid from her mouth.
 * Animating: A Red Lantern can will things to move how he wants.
 * Caustic Effect : Red Lantern power can damage and drain away the power of other lanterns almost like a poison. For example green lanterns who survive a Red Lantern attack will begin to lose power from the almost napalm like attacks of Red Lanterns.
 * Communicator: The ring can act as a personal communicator between Lanterns.
 * Costumes: The wearer of the ring may create any costume they choose, based on their personal preferences, whenever they choose. The ring projects the costume over any clothes already worn at the time. While Red Lanterns have no costume code they all are red and black with the Red Lantern symbol displayed.
 * Energy Projection: The rings can also project beams, form protective bubbles and force fields, and fire destructive blasts. The attacks often come from the mouth from a Red Lantern.
 * Energy Constructs: The rings can construct anything the wearer can imagine from hard-light energy, as long as they are willing to make it. The more determined the wearer is, the more complex and intricate these things can be. The constructs can even be so complex as to form working machines, computers, and even people. Red Lanterns have difficulty creating constructs due to their anger.
 * Flight: The ring allows the wearer to fly in atmosphere or in space, and can achieve incredible speeds, moving from planet to planet in a matter of hours.
 * Heart Replacement: Red Lantern Rings replace the heart of the lantern who wields them so removing a Red Lantern ring is often fatal without medical attention or the presence of a Blue Lantern. Atrocitus had his heart ripped from his body and was able to return to the fight within seconds since his ring serves as his heart.
 * Mirages: The Ring can create mirages/illusions.
 * Recharging: The rings need to be recharged by means of a Power Battery. Other large sources of power may be used to recharge a power ring, however effectiveness may vary. The internal power source of a Manhunter Android is, in effect, the same as a power battery, and can be used to recharge a power ring. During the JLA / Avengers crossover, a Cosmic Cube was used to recharge a depleted ring, although this is not an ideal solution and is available if there are no other options.
 * Ring Duplication: Each ring can duplicate itself, creating a second ring which may be given to another as a backup, for protection, or to help the lantern in times of great need. This duplicate ring is exactly like a normal ring.
 * Temperature Control: The Ring can increase or decrease the temperature of anything, even something as large as stars, or even create bubbles of intense heat or cold, even down to Absolute Zero.
 * Electro-Magnetic Scanning: The ring can allow (through the use of x-rays) the user to see through walls, without the people on the other side knowing. it can also scan along the Electromagnetic spectrum.
 * Wormhole/Warps: The ring can open wormholes to cut down on distance.

Trivia

 * Supergirl is known as the Girl of Steel and the Girl of Tomorrow.
 * Supergirl is the first member of the Red Lantern Corps who has managed to destroy her own ring and survive without one and without having any help from a Blue Power Ring, only because she was able to absorb enough yellow sunlight due to being at Earth's yellow sun when it happened.


 * After her adventures in the 30th Century and Kandor II, Supergirl settled in New York City. She'd later move to Metropolis to live with Lana Lang.
 * Supergirl keeps a network of safe houses all over the world, an idea she admittedly stole from Batman.