J'onn J'onzz


 * For the man he's impersonating, see Hank Henshaw.

"Welcome to the D.E.O., the Department of Extranormal Operations. The D.E.O. monitors and protects Earth from extraterrestrial presence and/or invasion. That means you."

- J’onn J’onzz to Kara Danvers

J'onn J'onzz, also known as the Martian Manhunter, is the sole survivor of Mars. After being discovered on Earth, J’onn was tracked down in a remote location in Peru by the D.E.O. However, Jeremiah Danvers saved J’onn's life by giving his own to stop Hank Henshaw, with J’onn promising to watch over Alex Danvers thereafter. Disguising himself as Hank Henshaw, J’onn took over as the head of the D.E.O.

Head of the D.E.O.
The D.E.O. subdued Supergirl as she was mid-flight on her way to stop a fire. After she woke up at their base J'onn, as Hank Henshaw, introduced himself as the organization's director. After being released from kryptonite cuffs, J'onn explained to Kara how her ship brought Fort Rozz to Earth when it escaped the Phantom Zone, and released thousands of the galaxy's worst criminals. Afterwards, Hank rejected her offer to help capture them, telling her that if she wanted to help, she could go back to getting someone's coffee. Henshaw later sarcastically remarked on how Kara did in fact help, after she was defeated by Vartox and her wound opened up a possible way to ID his weapon, potentially giving the D.E.O. a way to defeat him. Later, Hank was convinced by Kara to let her intercept Vartox, after the satellites picked him up heading towards National City, with him telling Kara, "Make sure you win." He was later questioned by Alex Danvers whether she was solely recruited based on Kara, with Hank telling her that, that was in fact the reason she was recruited, though she was the reason she got to stay within the organization.

A week later, J'onn along with the rest of the D.E.O. tested the limits of Kara's abilities, as he needed to know that she was in full control of her powers. The next day, J'onn questioned what Kara was doing at Plastino Chemicals during a D.E.O. investigation, though after the situation was explained to him by Alex, he told Kara not to touch anything. At the D.E.O. base, Kara told J'onn and Alex that the alien they were looking for was a Hellgrammite. J'onn was offered by Kara that the D.E.O. could track the Hellgrammite down, and Kara could defeat him, though J'onn came to the declined saying she could do so if she could prove to them that she could handle herself without being killed. The following day, J'onn along with Alex and Agent Hartmann came to the conclusion that the Hellgrammite was eating the DDT he had been stealing, as the government had been destroying remaining stockpiles, and his food source was shrinking. Later, the DEO set a trap for the Hellgrammite with a truck driving with tanks of DDT in it's back, and Alex and J'onn along with several other DEO agents followed behind it in another vehicle. Soon after Alex was abducted by the Hellgrammite, forcing J'onn to call Kara back the D.E.O. base. He was later berated by her for putting her through tests instead of trusting her, as the situation could have been prevented if she had been there. J'onn however reassured Kara that they had every satellite and a tactical drone searching for Alex. J'onn was later alerted to Alex's position after Kara discovered it through the use of her super hearing. Though he warned her to wait after she told him he that she was going to get Alex, he was ignored. J'onn later rescued both Alex and Kara from Astra, ordering the Kryptonian to halt. Though Astra grabbed J'onn by the neck, taunting that he had no weapon that could hurt her, he plunged a kryptonite knife into her arm, prompting her to fly off. J'onn was later thanked by Alex for helping her setup the room in the D.E.O. base that Kara could talk with the AI that was found in her pod.

Personality
J'onn is kind, caring, selfless, intelligent, moral, honorable, he is occasionally sarcastic, although his sarcasm is likely a mask, to keep his alien identity a secret.

He is very calm, level-headed and patient, as he rarely loses his temper, however, he has no tolerance for those who disrespect his comrades. J'onn is also cold towards people that he dislikes for good reason, like; Sam Lane, (due to the latter's arrogant, rude, disrespectful, ungrateful, selfish and immoral nature).

J'onn is very reluctant to use his powers, as he believes people will get hurt if he does use them.

Powers

 * Super strength: As a martian, J'onn is capable of great feats of strength (similar to that of a Kryptonian), such as bending the metal casing of a bomb with his bare hands. He can augment their strength by focusing their telekinesis in their body and use it in a tactil way.
 * Invulnerability: J'onn's body is denser than a human's but not nearly as durable as a Kryptonian's.
 * Immunity: As a martian, J'onn is inmune to human diseases.
 * Shapeshifting: Due to his martian physiology, J'onn is able to change his form at will,he can transform or mimic any living organism, android or creature and object. However, he seems unable to perfectly mimic another person all the way to the genetic level, since he couldn't pass the biometrics scan locking mechanism that required Maxwell Lord's finger prints in order to access through.
 * Accelerated healing factor: Due to his shapeshifting powers, he is able to heal faster than a human would.
 * Density-Shifting: Density shifting enables J'onn to move through solid objects or to increase his density to become near or completely invulnerable.
 * Invisibility: J'onn can blend within the environment by changing the appearance of his form to bend the light waves around him to match with his surroundings to become near or completely invisible.
 * Telepathy:  J'onn has shown some degree of telepathy, able to read the minds of other people; except for Kryptonians, communicate with others mentally and projects his thoughts in to others,as well as hear others people's conversation psychically.
 * Mental Detection: J'onn use this abilities multiple times,as when he sensed Alex Danvers' presence at the D.E.O, knowing Jemm was controlling the mind of the guard the and when he track and detect the location of the White Martian. He can use this to see with his mind like a mental view
 * Psychic Shield: J'onn can generate a "Mental Shield" to prevent mental intrusions, such as preventing other telepaths from scanning his mind.
 * Mind Control: J'onn can control the thoughts and actions of others, he was able to induce amnesia to a Lord Technologies's guard.
 * Telekinesis: Due to his martian physiology, Martians can move, control and manipulate objects with their mind, J'onn was able to throw around Jemm with his mind.
 * Flight: Due to his martian physiology, J'onn can use the telekinesis to move himself, and simulate flight. He has been seen being able to keep up in the pace of a Kryptonian while airborne.

Abilities

 * Expert hand-to-hand combatant: As the director of the D.E.O., J'onn is an expert in unarmed combat.
 * Expert marksman: As the director of the D.E.O., J'onn is an expert with firearms, as shown when he was able to shoot at the Hellgrammite while simultaneously driving a vehicle.

Adventures of Supergirl

 * "Chapter 1"

Trivia

 * J'onn is unable to read Kryptonian minds.
 * J'onn has lived on Earth for over 50 years.
 * J'onn she's both Alex Danvers & Kara Danvers as his adopted daughters.