Origin - Centuries ago on the planet Mars, two green Martians known as M'yrnn and Sha'sheen gave birth to twin sons. The bearing of twins was uncommon among the Martian culture, and as such, the first of the twins was named J'onn J'onzz, whose name means "Light to the Light". J'onn's brother however, was born a mutant, bereft of a Martians innate ability to communicate telepathically. He name was Ma'alefa'ak, whose named means "Darkness in the Heart". As an adult, J'onn became a Manhunter (police officer) and married a Martian woman named M'yri'ah. The two had a daughter named K'hym. Years passed, and J'onn's brother Ma'alefa'ak grew to despise everything about Martian culture. In an ambitious endeavor to commit full-scale genocide against his own people, he engineered a contagious virus known as H'ronmeer's Curse. The virus reacted to telepathic energy, and carried from one Martian to the next whenever they elected to use their psionic powers. The plague responded to a Martian's innate fear of fire, causing them psychosomatic stress so intense, that their bodies and minds would literally burst into flame. J'onn desperately tried to keep his wife and daughter from using their mental gifts, but they were unable and so, contracted the plague. K'hym was the first to experience the symptoms, and M'yri'ah followed soon after. J'onn was anguished as he watched his family burning to death before his very eyes. The trauma of the event shattered his psyche, and nearly drove him mad. J'onn J'onzz is accidentally teleported to Earth by a human scientist, Dr. Erdel, who immediately has a heart attack and dies, leaving the Martian stranded and unable to return. He is able to use his powers to fit in, adopting a human-like appearance and calling himself "John Jones". He joins the police force, secretly using his alien powers to help the inhabitants of his new planet. He would go on to help create the Justice League. During the Justice League International years, J'onn is shown to be obsessed with Chocos. J'onzz reveals that his familiar appearance is not his true Martian form but a "compromise" between his true form and a human appearance explaining that his real form is private and that, even on Mars, his "public" appearance was the familiar version. In addition to serving in the League under his own identity, he also joins (under duress) as "Bloodwynd". Martian Manhunter attempts to conquer his fear of fire and makes a deal with a flame-wielding villainess named Scorch, who wants J'onzz' telepathic help in dealing with her own mental issues. After falling in love with her his fear of fire is drastically lessened although not completely gone. J'onzz is devastated shortly thereafter when she falls into a coma after a large fight. When Checkmate decided to capture a number of super-villains and exile them on a "prison planet" in an event known as Salvation Run, J'onn volunteered to disguise himself as Blockbuster and infiltrate the planet to keep an eye on things, making periodic reports to Batman. Catwoman finds out his true identity and, to save her own skin, outs him to the other villains, who torture him. When the villains escape the planet, teleporting back to Earth, they leave J'onn in his cage to die. He is "rescued" by Libra and the new Secret Society of Super-Villains who open a Boom Tube between the planet and Earth. Libra brings him back to Earth with the express purpose of killing him, doing so with his spear tipped scale staff, for the Human Flame to show the Society members that he can give them their hearts desire. Human Flame having wanted J'onn dead for foiling a crime of his years ago. In his final moments J'onn broadcast a telepathic message to fellow heroes Batman, Superman, Green Lantern Hal Jordan, Gypsy, and Black Canary prompting them to say his name and, hours after his death had been discovered, simultaneously record part of his life story in their sleep. His remains were interred in a pyramid removed from Egypt and placed back in it's original location on Mars in a ceremony attended by many heroes. He was eulogized by Superman. At the end of the Blackest Night, J'onn is revived by the Entity along with other heroes and a few villains. When Superman asks if J'onn is truly alive, J'onn responds "It appears so". The Entity then told J'onn to choose between Mars and Earth. J'onn chose Earth and returned only to be absorbed into the Earth by the Entity as "part of the plan". When the "Dark Avatar", made his presence known, Martian Manhunter is revealed to be part of the Elementals. Martian Manhunter was transformed by the Entity to become the element of Earth and protect the Star City forest from the "Dark Avatar", which appears to be the Black Lantern version of the Swamp Thing. The Elementals are then fused with the body of Alec Holland in order for him to be transformed by the Entity into the new Swamp Thing and battle against the Dark Avatar. After the Dark Avatar is defeated, Swamp Thing brought back Martian Manhunter to normal.
Powers and Abilities - Martian Manhunter has been described as "the Swiss Army knife of superheroes." He possesses many of the powers of Superman. His powers come from his alien physiology. Born of Mars over a millennium ago, from a super advanced civilization, boasting advanced technology and genetic modifications over its people, the Martian Manhunter would appear to be a genetically modified being with incredible powers stemming from the changes made in his body. The Martian Manhunter can change his mass, color, relative shape, imitating even clothing if desired. The bio-polymer is extremely flexible, durable, incredibly strong for a biological material and apparently self-sustaining. It is unknown if the Martian Manhunter actually needs to eat or not but he has been seen consuming food, particularly "Chocos," a brand of cookies. The most incredible of the powers of the Manhunter is the ability to shape-shift. There does not seem to be any limit to the number of people the Manhunter can imitate and has stood in as a double for many famous people. His ability to imitate people and their mannerisms has stood him in good stead for his disguises. He has recently been seen to shape-shift into the size and shape of a common house fly and to enormous sizes comparable to skyscrapers. He is also able to change colors. The Manhunter can cause the bio-polymers in his body to lose their ability to reflect light, rendering the Manhunter invisible to normal light and human sight. Along with his nigh-invulnerability, his shape shifting makes him even more difficult to harm. Hazardous environments practically do not affect the Martian Manhunter. He has proven to be immune to all known human diseases, but no experimentation has been done to see what more advanced viruses such as Ebola or anthrax might have. The Martian Manhunter is one of the strongest beings on the planet. J'onn's strength is great enough to the point that he has drawn blood from beings as durable as Kryptonians such as Supergirl by his punches alone. By modifying the density of these bio-polymers, the Manhunter can make himself stronger by forcing the polymers into tighter bundles. While at a rest state the limits of his strength are unknown, the Manhunter can lift 100 tons without much effort. He is nearly as powerful as the likes of Superman when concentrating his bio-polymers to their full capabilities. The Martian Manhunter has shown amazing regenerative abilities. His regenerative abilities are so great that he has been able to completely regenerate from nothing but his severed hand, regenerate in moments from nothing than a puddle of green liquid and other moments, having his head cut off, and he has shown total control over his molecular structure. J'onn possesses nine different senses. One of these senses could account for instances of the Manhunter's perceived precognitive abilities. Due to the fact that he is eons old his life expectancy is unknown but it would seem that he is the equivalent to a male earthling in his mid to late 30's. He also possesses super hearing, breath, infrared vision, x-ray, telescopic, microscopic, heat, and electro-magnetic vision. The Martian Manhunter is the most powerful telepath on the planet, and is one of the strongest telepathic beings in the Universe. He has the ability to perform mind wipes as well as mind scans. The Martian Manhunter's sound reasoning capabilities and long term association Earth's global population, gives him an edge in dealing with humans of diverse governments, cultures and religions. In the northern hemisphere, the Martian Manhunter is one of many costumed adventurers battling against entropy. In the southern hemisphere of Earth, the Martian Manhunter is more well known than Superman. Considered the scourge of the underworld because of his dedication to truth and improving the lot of humanity everywhere, he is feared by underworld criminals worldwide. His noted skills include: master detective, multi-lingual, high level or logic and reasoning, highly developed level of empathy.
I am Mars' sole survivor. There is a reason for that.