M'gann M'orzz

"I'm not like the others. I wanted to protect you."

- M'gann to J'onn J'onzz

M'gann M'orzz, is a White Martian from the planet Mars. Unlike most of her kind, M'gann didn't share the same hatred towards Green Martians, but was unwillingly recruited into the White Martian cause to wipe out their counterparts. After being unable to bare the slaughter, and a failed attempt to free several Green Martian captives, M'gann fled to Earth and remained in hiding for centuries. Hiding as an alien refuge, she took on the guise of a Green Martian, nicknamed "Miss Martian", to conceal her true nature. While disguised in human form she works as a bartender under the name "Megan", desiring only to live a peaceful life among humans. Eventually she encountered J'onn J'onzz/Martian Manhunter, the last of the Green Martians, and formed a steady friendship with him.

Life on Mars
M'gann M'orzz was born and raised on the planet Mars. She hails from an underground warmonger race of psychic shape-shifters known as White Martians. When her people invaded the surface of their world and wiped out the peaceful race of the Green Martians in the so called "Martian Holocaust", M'gann served as a prison guard in the Galle Crater's concentration camp. However, unlike most of the other White Martians, M'gann had a sense of honor and justice. She could not stand the slaughter of all those innocents at the hand of her kind, so she tried to free as many Greens she could and escape with them. However her attempt was discovered by the other guards, that came after her and managed to kill everyone but M'gann, who escaped from her planet and sought refuge on Earth, where she hid for centuries.

Alien bartender and Fight Club
Eventually M'gann found a work at an alien bar in National City, where she took the form of a human woman and the alias of "Megan" to blend in. When Alex Danvers visited the bar to ask an alien for information about Scorcher, M'gann told her where the alien might be. When J'onn J'onzz came to the alien bar the following night, she was startled by his appearance. M'gann left suddenly telling him her shift ended; J'onn confronted her outside the bar where she took the form of a Green Martian claiming to be the last daughter of Mars.

She and J'onn talked about how she escaped from Mars and she came to Earth to seek refuge, anyway she altered her story telling him she was freed by a good willed female White Martian. Thereafter J'onn proposed her to establish a mental link to share consciousness, but M'gann refused.

After a few days Martian Manhunter finds out that M'gann, under the alias of "Miss Martian", is taking part to the battles in the alien fight club run by Roulette because of the need to expiate her guilt. When J'onn confront her about it, she claim it was her own business, J'onn replied that they should preserve what they have lost, but M'gann says that she wants to forget about everything. The next day J'onn came to the alien bar to apologize M'gann, but they are kidnapped by Roulette's guards and forced to fight to the death for the title of "last Green Martian". Despite M'gann's attacks, J'onn refuses to defend himself and told her that she should not become a murderer just because she feels guilty for having survived all their people. After hearing this, M'gann stops the fight and tells Roulette she will not kill him, so the ringmaster released Draaga to terminate them both but they are joined in the fight by Supergirl, who managed to defeat the enemy.

Later J'onn comes to M'gann's home again and said that it was right they leave the past behind. He also adds that if she does not want to establish a connection, he will not insist and that he'll always be there if she needs help. After J'onn left, however, M'gann looks at herself in the mirror mortified and assumes her real White Martian form.

Identity revealed
Over the next days M'gann and J'onn bonds and begin to know each other better. When Alex came into the bar asking M'gann for help as J'onn need a blood transfusion following his clash with Parasite. Although initially skeptical because her White Martian blood could poison him, M'gann agrees and saves his life. When J'onn wakes up, he sees M'gann sitting next to him, and thanks her for saving his life, asking her to stay with him until he falls asleep again.

Knowing that White Martian's blood transfusion turns Green Martians into white ones, M'gann visits J'onn to assure his wellbeing and even brings him a special martian recipe known as K'rkzar tonic. Though after J'onn checks his blood test results he deduces she's actually a White Martian and confronts her out of the alien bar. M'gann tries to explain she's not like the others of her kind but J'onn believes she is just a liar and begin fights her, beating her up almost to death. However, when M'gann assumes her human appearance begging him not to be killed in her real form, J'onn hesitate and instead decide to incarcerate her at the D.E.O. National City headquarters.

Powers

 * Martian physiology: Like all White Martians, M'gann possesses several incredible powers, such as superhuman strength, near-impenetrable skin, telekinesis, telepathy, shape-shifting, intangibility, and even the power to defy gravity.
 * Longevity: M'gann's life span is considerably longer than a normal human and likewise ages much slower. As proved by being on Earth for centuries.
 * Super strength: M'gann is stronger than humans, as well as some aliens, though not as strong as a fully-powered Kryptonian. However she can augment her strength by focusing her telekinesis and using it in a tactile way.
 * Invulnerability: M'gann's body is far denser than a human's, but not quite as durable as that of a Kryptonian.
 * Shapeshifting: M'gann is able to change her form at will, even on a cellular level, completely altering her physical appearance, allowing her to transform or mimic other people, animals or other creatures.
 * Malleability: M'gann can stretch and bend her body (E.g into large whips to grab things at greats distances).
 * Accelerated healing factor: Due to her shape-shifting powers, M'gann is able to heal faster than a human would.
 * Immunity: M'gann is immune to human diseases and illness.
 * Camouflage/Invisibility: The ability to blend within the environment by changing the appearance of their form to bend the light waves around them to match with their surroundings, making themselves almost - but not completely invisible.
 * Density-Shifting/Intangibility: M'gann is able to move through solid objects or to increase her density to become near-invulnerable.
 * Blood: If M'gann's blood is injected into a Green Martian's blood system, it will turn them into a White Martian.
 * Telepathy: M'gann is able to read the minds of other people (except for Kryptonians), communicate with others mentally and projects her thoughts in to others, as well as hear others people's conversation psychically.
 * Telekinesis: M'gann can move and manipulate multiple objects with her mind.
 * Flight: By telekinetically moving themselves, Martians can simulate flight.

Abilities

 * Expert hand-to-hand combatant: M'gann is an expert in unarmed combat, enough to be undefeated in Roulette's fight club and stand head-to-head with J'onn J'onzz.
 * Multilingual: As a native Martian, M'gann speaks that language fluently, in addition to English.

Behind the scenes

 * The show's version of the character is significantly different in physical appearance from her comic book counterpart. In the comics, M'gann has the appearance of a teenage individual rather than that of an adult. Moreover, in her human civilian identity (Megan Morse), she appears as a Caucasian, red-headed girl rather than an African-American woman. Her Martian form is also different on the show, as instead of resembling J'onn in appearance, she modifies her looks to that of a green-skinned humanoid-like individual with red hair.