J'onn J'onzz

J'onn J'onzz (born c.1560), also known as John Jones, is a Green Martian residing on Earth as the superhero Martian Manhunter, a detective of the Detroit Police Department and a founding member of the Justice League of America.

Early life 1560-2019
J'onn J'onzz was born on Mars as a Green Martian and eventually joined the Martian Police, marrying M'yri'ah and fathering a daughter, K'hym. Some time later, Mars fell into a war which resulting in his family's deaths and J'onn found himself on Earth. He adopted the name 'John Jones' and posed as a human, becoming a detective of the Detroit Police Department and moonlighting as the Martian Manhunter.

Forming the JLA (2020-)
When an alien known as Starro the Conqueror attacked, Martian Manhunter was one of the seven heroes to stop him. Due to their heroics, they formed a team and Martian Manhunter became a founding member of the Justice League of America alongside his peers.

As J'onn J'onzz
J'onn J'onzz is a wise and experienced individual, yet enigmatic with a trauma hidden from others. He bears immense sadness and guilt from the deaths of his family. His wisdom is used as advice to pass onto others and can often be seen lost in thought.

As John Jones
Under the guise of John Jones, he is a quiet yet bright man, often speaking when necessary and staying silent and watchful otherwise. His conservative and private nature apparently makes his fellow officers suspicious of him.

As Martian Manhunter
When operating as the Martian Manhunter, J'onn is much more outgoing and fearsome. He's very rarely emotional and remains reserved when hunting down his enemies, sticking to more silent methods like Batman. Not much is known otherwise since his existence was perceived as a myth until the Starro attack.

As J'onn J'onzz
J'onn J'onzz doesn't have a true form and so is typically seen as a green-skinned and red-eyed humanoid.

As John Jones
When posing as a human, John Jones is a towering dark-skinned man, large in stature and height.

As Martian Manhunter
J'onn sports the same Martian appearance as Martian Manhunter, yet with a suit uniquely catered to his abilities. Mainly bare in most parts, he sports a cape and a chest guard showing a Martian symbol.

Powers

 * Martian physiology: As a Green Martian, J'onn J'onzz has all the abilities of a typical Martian. These abilities make him on par with Superman as the most powerful being on Earth.
 * Flight: J'onn is able to fly, albeit more accurately thanks to his cape.
 * Longevity: Having lived for over 400 years, J'onn, like most Martians, has at least five times the life expectancy of a regular human.
 * Phasing: J'onn has shown the ability to phase his body through objects at will.
 * Regeneration: J'onn can regenerate from even the most fatal wounds in a matter of minutes, even seconds if extreme focus is applied.
 * Shapeshifting: J'onn is able to shapeshift into people and apparently objects. His most notable example is his human guise, John Jones.
 * Telepathy: J'onn has enhanced mental powers, able to move, talk or see things with his mind.
 * Force-field creation: J'onn can focus his mind to create force-fields to protect himself and others.
 * Mind-reading: J'onn was able to read Starro's mind to learn its motives.
 * Psionic blasts: J'onn can project waves of mental energy in the form of blasts, psychically attacking anyone in its radius.
 * Telekinesis: J'onn can move objects with his mind, as seen when moving Starro's spores away.
 * Telepathic assault: J'onn can use his telepathic abilities to assault someone else's mind. However, he has great disdain for doing so and is used a last resort in any fight.

Abilities

 * Genius-level intellect: Having lived for complete centuries, J'onn has acquired more knowledge and experience than any other known human. Even Batman, who had travelled across the globe in his training, recognises that J'onn surpasses him in knowledge.
 * Investigation: J'onn has undergone training as a member of the Detroit Police Department and was skilled enough to become an esteemed detective.

Season 1

 * Starro Attacks!

Trivia

 * It is heavily implied that J'onn is the last of his kind.

Behind the scenes

 * In the comics, J'onn J'onzz is the superhero known as Martian Manhunter and one of the last surviving Green Martians, debuting in Detective Comics #225 in 1955.
 * In addition, Martian Manhunter became a member of the JLA in The Brave and the Bold #28 in 1960.