List of DC Comics characters: H

Hackett is a former pilot of the Royal Air Force who later became a henchman of the heroin manufacturer China White.^[1] Decades prior, he manipulated Oliver Queen into investing in illegal offshore accounts.^[2]

Two characters loosely based on Hackett, David "Dave" Hackett and his son Sam Hackett, appear in Arrow, portrayed by Ben Cotton and Luke Camilleri respectively. The former worked as a bodyguard for Robert Queen while the latter is a former minor criminal and electrical engineer. In flashbacks, Dave accompanied Robert on his yacht, the Queen's Gambit, as part of a business trip to China. However, the ship sank and Dave, Robert, and Robert's son Oliver were left adrift on a raft until Robert killed Dave and himself to ensure Oliver's survival. In the present, Sam hacks the DA office's computer and obtains unredacted transcripts of Oliver's therapy sessions, through which Sam discovers his father's fate and plots revenge on Oliver. After Sam hacks Star City's power grid, Oliver attempts to calm him by telling his side of the story, but Sam refuses to stand down until Dinah Drake destroys Sam's machine and Sam is arrested.

Jack Haly (also known as C.C. Haly) is the ringmaster of Haly's Circus, which Dick Grayson and his family worked for. When the circus came to Gotham City, Haly was confronted by Tony Zucco, who demanded protection money and murdered Dick's parents after he refused.^[3]

• Jack Haly appears in the Batman: The Animated Series two-part episode "Robin's Reckoning", voiced by an uncredited Ed Gilbert.
• Jack Haly appears in Young Justice, voiced by Stephen Root.^[4]
• Jack Haly makes a non-speaking cameo appearance in Batman: Return of the Caped Crusaders. This version's design is similar to the Young Justice version.

Catherine Hamilton-Kane is a fictional character appearing in American comic books published by DC Comics.

Following the death of his wife Gabrielle "Gabi" Kane, Jacob Kane later remarried Hamilton Rifle Company heiress Catherine Hamilton who became Kate Kane and Beth Kane's stepmother.^[5]

• Catherine Hamilton-Kane appears in Batwoman, portrayed by Elizabeth Anweis.^[6] This version is a defense contractor and the CEO of Hamilton Dynamics. Ultimately, she sacrifices herself to save her stepsister Mary Hamilton's life after they are both poisoned by Alice.
• Catherine Hamilton-Kane appears in Gotham Knights, voiced by Liz Burnette.^[7] This version became the commissioner of the Gotham City Police Department sometime after the death of James Gordon and does not share his support towards vigilantism.

Harlequin's Son is a fictional character appearing in American comic books published by DC Comics.

He is the son of Molly Mayne / Harlequin and an unknown man, and utilized the former's technology to become a villain. However, he eventually reforms and becomes an actor before mysteriously disappearing.^[8]

In "Flashpoint Beyond", Harlequin's Son was among the thirteen missing Golden Age superheroes who were kidnapped by the Time Masters before eventually being returned to his own time when the pods they were in failed and caused history to rebuild around them.^[9]

Harlequin's Son targeted abusive spouses. It was also revealed that the fabric of his costume was enchanted by Wizard as his mother took account of him having to deal with anyone with magical abilities. He was apprehended by the Justice Society of America members Hawkman, Power Girl, Salem the Witch Girl, and Stargirl with help from Legionnaire (a younger version of Mordru wanting to avoid the path of evil).^[10] It took three attempts that had him forcefully dragged back to the Justice Society of America by Hawkman and Power Girl before Harlequin's Son can join the Justice Society of America. He assisted them in fighting the zombies that were summoned by Gentleman Ghost using a special sphere.^[11] Harlequin's Son was later seen with the JSA during their fight with the Legion of Super-Heroes until it was discovered that Eclipso was in Wildcat.^[12]

Harm (William Hayes) is a teenage supervillain in the DC Universe. Created by writer Peter David and artist Todd Nauck, he first appeared in Young Justice #4 (January 1999). The character is the brother and killer of Greta Hayes / Secret, and possesses superhuman physical attributes and illusion-casting abilities derived from a deal with the demon Buzz.

• Harm appears in the Young Justice (2010) episode "Secrets", voiced by Benjamin Diskin.^[13] This version wields the Sword of Beowulf, having killed Greta to obtain it as it can only be wielded by someone who is purely good or evil. Eventually, Greta's spirit forces him to confront his guilt over his actions, after which he loses the sword and is arrested.
• Harm appears as a character summon in Scribblenauts Unmasked: A DC Comics Adventure.^[14]

The Hat (Rampotatek) is a wannabe superhero in the DC Universe. He is a Japanese member of the Elite who wields a hat powered by demonic magic. The team's violent actions lead them into conflict with Superman, during which they are stripped of their powers.^[15]

• The Hat appears in Supergirl, portrayed by Louis Ozawa Changchien. This version is an alien whose namesake utilizes fifth-dimensional energy as it previously belonged to his friend Mister Mxyzptlk.
• The Hat appears in Superman vs. The Elite, voiced by Andrew Kishino.^[16]

Hauhet is the fictionalized version of the Egyptian entity of the same name, appearing in American comic books published by DC Comics. A contemporary of Nabu in association with Doctor Fate, she acts as the patron deity within the Helm of Fate to Khalid Nassour. She first appears in Future State: Justice League #1 within an alternate future parallel to the mainstream comic universe although she would later make her mainstream appearance in Justice League Dark Annual #2 (2022).

In the mainstream comic universe, Hauhet makes a brief appearance, the aforementioned event taking place years after; she is revealed to be the entity responsible for sending visions to Khalid Nassour, depicting the fall of the Tower of Fate through the machinations of Merlin and Arion. Upon further study, Khalid also learns that Merlin will bargain a deal with Jason Blood, in which will lead to him betraying Justice League Dark and himself despite insisting otherwise. She later arranges a meeting with Diana through Doctor Fate's ankhs, having Diana act as a messenger for the urgency of the situation and warning him and the Justice League Dark to not allow Merlin access to the Helm of Fate. Both Wonder Woman and Khalid are initially skeptical of her nature and intentions.^[17]

An alternate timeline variant of Hauhet appears in DC Future State.^[18]

The Head is an alien in the DC Universe. The character, created by Gail Simone and Grant Morrison, first appeared in Brave New World #1, 2006.

Within the context of the stories, the Head is stranded on Earth after a failed plot by the microscopic alien race the Waiting to conquer it.

There have been two different characters named the Headhunter in DC Comics.

The Headhunter is a mercenary and nemesis of Batman, as he was hired by criminal Vincent Morelli to kill Commissioner Gordon. But was arrested.^[19]

In 2016, DC Comics implemented another relaunch of its books called DC Rebirth which restored its continuity to a form much as it was prior to The New 52. Headhunter murdered the Swamp Thing's father. Batman and the Swamp Thing investigated, discovering that he was responsible. To Batman's horror, the Swamp Thing murdered the Headhunter.^[20]

Another mercenary/serial killer called Headhunter (Detective Moreland McShane) appeared in the Catwoman books. A former Marine, McShane is assigned to catch Catwoman by Gordon, but falls for her leading to her rejecting him once he knows her true identity. McShane is killed aboard Babylon Towers, leading Catwoman to report his body to the GCPD.^[21]

This Headhunter was a warrior shaman who used Nth Metal weapons. He developed a particular fascination with Hawkman, to the point of reanimating the bones of his previous incarnations.

An original incarnation of the Headhunter named Wendell appears in Gotham, portrayed by Kyle Vincent Terry. He temporarily replaces Victor Zsasz as the Penguin's security counsel.

Hellhound is the name of three fictional characters appearing in American comic books published by DC Comics.

Kai was the best student in the Armless Master's dojo in Gotham City. He later became a thief, mercenary, and enemy of Catwoman before being killed during a meeting of Gotham gang bosses.

A second Hellhound, Jack Chifford, is introduced in Villains United as a member of the Secret Society of Super Villains. During Salvation Run, he is killed and eaten by "lion-lizards" while stranded on another planet.

In 2011, "The New 52" rebooted the DC universe. Hellhound appears as a member of Cheetah's Menagerie.^[22]

• Hellhound makes a non-speaking appearance in the Justice League Unlimited episode "Grudge Match" as a participant in Roulette's "Meta-Brawl".
• Hellhound appears as a character summon in Scribblenauts Unmasked: A DC Comics Adventure.^[14]
• Hellhound makes a non-speaking appearance in Batman: Bad Blood as Heretic's bodyguard.

Inspector Henderson is the name of two fictional characters appearing in American comic books published by DC Comics. William Henderson first appeared on radio and television before appearing in the Action Comics #440 where he is adapted by Elliot S! Maggin, Curt Swan, Bob Oksner.

After appearing on television and radio, Inspector William Henderson was introduced in the comics.^[23] When he did, he was once again as Superman's main police contact.^[24]

He also appeared in issues of the first Black Lightning series where it is revealed that he has a son named Andrew who is a member of the 100.^[25]

In New Adventures of Superboy #6 (June 1980), a younger version of the character was introduced. Detective-Sergeant Henderson visited Smallville in an attempt to convince Superboy to relocate to Metropolis, where the rate and volume of crime was much higher. Henderson was unsuccessful, although the Boy of Steel would relocate to Metropolis upon reaching adulthood and becoming Superman.

Since John Byrne's 1986 Man of Steel miniseries, Inspector Henderson's role has been reduced somewhat, in favor of newer characters Dan Turpin and Maggie Sawyer. Currently, Henderson is Metropolis' police commissioner.

Supergirl (vol. 5) #37 (March 2009) introduces Inspector Mike Henderson, an African-American detective who heads the Metropolis Metacrimes Division, one of two units replacing Sawyer and Turpin's Special Crimes Unit (the other being the Science Police).

• Inspector Henderson was created for The Adventures of Superman, in which he was Superman's police contact.^[25] Mainly used as a sounding board in that capacity, the only detail about Henderson's personal life that was revealed was that he had a son named Ray.^[25] Inspector Henderson was voiced by Matt Crowley and later by Earl George.

• Inspector Henderson appears in Adventures of Superman, portrayed by Robert Shayne.^[26] This version is a member of the Metropolis Police Department and is a friend of the Daily Planet staff, often working with them on crime investigations. In the episode "The Talking Clue", Inspector Henderson has a teenage son named Ray (portrayed by Richard Shackleton).

• Inspector Henderson appears in the Superman (1988) episode "Night of the Living Shadows".

• Inspector Henderson appears in the first season of Lois & Clark: The New Adventures of Superman, portrayed variously by Mel Winkler, Brent Jennings, and Richard Belzer.

• Inspector Henderson appears in the Superman: The Animated Series episode "Feeding Time", voiced again by Mel Winkler.^[27] This version is the police commissioner of the Metropolis Police Department.

• Inspector Henderson appears in Black Lightning, portrayed by Damon Gupton.^[28] Throughout the series, he deduces Black Lightning and Thunder's secret identities and is promoted to Deputy Chief and chief of police. In the third season finale "The Book of War: Chapter Three: Liberation", Henderson is killed by a Markovian soldier.

John Wilson, also known as John Henry, is a fictional DC Comics superhero who appeared in DC: The New Frontier.

John Henry was a veteran of the Korean War whose family was killed by the Ku Klux Klan. Devastated by the events and blamed for the murders, John forged two iron sledgehammers, donned an executioner's hood, and became a vigilante before eventually being captured and killed.^[29][30][31]

In The New Golden Age, John Henry's history was integrated into the main timeline. One of his sledgehammers was found by an unnamed old man and given to a youth who took the name John Henry Jr.^[32]

John Henry's tombstone appears in Justice League: The New Frontier.

John Henry Jr. is a fictional character appearing in American comic books published by DC Comics.

John Henry Irons has a great-uncle of the same name who was inspired by the vigilante John Henry after he was given one of John Henry's sledgehammers by a mysterious old man. After he brought the last of John Henry's murderers to justice, John Henry Jr. was kidnapped by the Time Masters when trying to look for the other sledgehammer that John Henry Jr. wielded.^[8] John Henry Jr. was among the 13 missing Golden Age superheroes that were returned to their own time when the pods they are in failed causing history to be rewritten around them^[33] However, John Henry Jr. ended up a prisoner of the Childminder. He and the other missing sidekicks are eventually rescued by Stargirl and transported to the present day.^[34]

John Henry Jr. was hooked up with his grandnephew and his great-grandniece Natasha Irons.^[35] Mister Terrific later mentioned that John Henry Jr. is officially with his relatives.^[36]

Heretic (also known as "Fatherless") is a fictional character appearing in American comic books published by DC Comics debuting in Batman and Robin (Vol. 1) #12 (July 2010). He was created by Grant Morrison and David Finch.^[37]

Heretic is an operative of Leviathan who wears a steel bat-shaped mask and armor.^[38] He would later be revealed to be a genetically modified adult clone of Damian Wayne created by Talia al Ghul which maintained an infantile face and immense strength.^[39] He was additionally responsible for killing Damian in the Batman, Inc. comic and killing fellow Batman Inc. member Knight, not before Squire costs him an eye. Talia is furious at Heretic's decision to kill Damian without permission and kills the former in revenge.^[40]

Later, Heretic returned under the title of "The Other" having claimed a League of Assassins Lazarus Pit from the previous owner. Heretic/Other would blow up Titans Tower, kill Lady Vic and hire Lobo to kidnap Damian. He'd be defeated in battle with Robin and Titans member Djinn with him falling into a crevice. ^[41]

• Heretic appears as a character summon in Scribblenauts Unmasked: A DC Comics Adventure.^[14]
• Heretic appears in Batman: Bad Blood, voiced by Travis Willingham.^[42] This version was part of a project established by Ra's al Ghul to create a worthy soldier for the League of Assassins, with the Mad Hatter programming his mind. Heretic is later killed by Talia al Ghul after a failed attempt to gain independence.

Cecile Horton is a fictional character appearing in American comic books published by DC Comics. The character was created by Cary Bates and Carmine Infantino, and first appeared in The Flash #332 (April 1984). She was the defense attorney for Barry Allen / Flash for Professor Zoom's murder in "The Trial of the Flash" storyline.

A loose interpretation of Cecile Horton appears in The Flash, portrayed by Danielle Nicolet.^[43] This version is a defense attorney who goes on to enter a relationship with Joe West after helping solve metahuman crimes and helping Team Flash on several occasions. Later in the series, she gains the metahuman abilities of telepathy and telekinesis and becomes a superhero as Virtue.

Professor Hughes (first name unknown) in a fictional character appearing in American comic books published by DC Comics.

Professor Hughes was a professor at Midwestern University. Jay Garrick worked under him when an experiment with hard water vapors gave Jay Garrick his super-speed.^[44]

Professor Hughes was still working at Midwestern University at the time when Mister Alpha was causing havoc. He helped the Justice Society of America defeat him.^[45]

In the pages of "The New Golden Age", the Prime Earth history of Professor Hughes became obsessed with unlocking mankind's potential after seeing the news about Green Lantern. After his tests on animals, he secretly used Jay Garrick as a guinea pig for an experiment involving hard water vapors. This led to Jay Garrick becoming Flash. Since then, Professor Hughes tried to replicate the experiment and failed until he was approached by Parsifal of the Nazis who blackmailed him into working for the Nazis as he has evidence that he killed the doctor that tended to Jay Garrick. He made weapons for the Nazis, created an element-manipulating armor where he took up the alias of Doctor Elemental, and turned a bear into his cyborg henchman Ro-Bear. In 1941, the Justice Society of America broke into Doctor Elemental's lab that had connections with the Injustice Society where they fought his robots and Ro-Bear. Doctor Elemental proved to be a match for the Justice Society. When Boom time-traveled to the 1940s and helped her father Flash, Doctor Elemental was defeated where he got away. His hard water vapor worked on a younger Judy Garrick in 1949 which led to her becoming Boom. In 1963, Boom assisted Flash in rescuing Joan Garrick from Doctor Elemental. Though Boom rescued her mom and got a look at Doctor Elemental's face, she suddenly vanished. Only Doctor Elemental remembered her when he got away. Back his true identity, Professor Hughes approached Garrison Slate where they founded S.T.A.R. Labs. After Boom was among the Lost Children rescued from Orphan Island, Doctor Elemental found out and started targeting her. The Terrificvision made by Mister Terrific and Quiz Kid helped to get into Joan's memories and help Flash recognize that Professor Hughes is the true identity of Doctor Elemental. As Flash and Boom hide out with Doctor Mid-Nite in Brazil, Doctor Elemental sent Ro-Bear and some of his robots to keep Flash and Doctor Mid-Nite busy while he led some other robots to capture Boom. After interrogating Ro-Bear, Flash found Boom in Doctor Elemental's hideout on an island in the Atlantic Ocean where he planned to use Judy to power his machine that would cause a global tranformation in the human race. Flash rescued Boom and thwarted Doctor Elemental's plot as Doctor Elemental got away. While in an underground cavern, Doctor Elemental was approached by a mysterious person.^[46]

Doctor Elemental appeared as a member of the Injustice Society.^[47]

The Human Cannonball (Ryan Chase) is a superhero in the DC Universe. The character, created by Tom DeFalco and Win Mortimer, first appeared in Superman Family #188 (March 1978). Within the context of the stories, the Human Cannonball grew up in the circus and is a friend of Lois Lane. He has no superhuman powers, but can fly using an advanced jet-pack—he wears a cannonball-shaped helmet to allow him to crash into his targets head-on. His costume consists of a green shirt (with a yellow CB emblem) and tights, black pants, black gloves and violet thigh-length boots.

The Hyena is the name of two fictional supervillains published by DC Comics. The first Hyena debuted in Firestorm #4 (September 1978) and was created by Gerry Conway and Al Milgrom.^[48] The second Hyena debuted in The Fury of Firestorm #10 (March 1983) and was created by Conway and Pat Broderick. Both are werehyenas who transform when under great emotional stress.

The first Hyena, Summer Day, joined the Peace Corps as a result of relational issues with her father and was turned into a werehyena after an accident in Africa. Taking the name the Hyena, Summer returned to America and began attacking both criminals and police officers. A result of her condition is a steadily progressing madness.^[49]

The second Hyena, Jivan Shi, was a psychiatrist whom Summer Day had fallen in love with while he was attempting to treat her werehyena condition. One night, as Summer and Jivan were embracing, Summer transformed and infected him with the werehyena curse.^[50] According to The Fury of Firestorm #10–13, the madness suffered by the werehyenas is one's bestial side taking over, coupled with an exaggeration of negative emotions.

In Infinite Crisis, Deadshot killed one of the Hyenas after a prison breakout^[51] and the other appeared as a member of the Injustice League in One Year Later before being killed by Parademons.^[52]

A pack of at least five new werehyenas, presumably suffering from the same curse as Summer and Jivan, were seen in San Francisco before being defeated and cured.^[53]

In 2011, The New 52 rebooted the DC universe. The Hyenas are reintroduced as mercenaries who possess superhuman physical abilities derived from special drugs.^[54]

In Forever Evil, the Summer Day incarnation of Hyena appears as a member of the Secret Society of Super Villains.^[55]