List of DC Comics characters: H
Hackett. Hackett is a former pilot of the Royal Air Force who later became a henchman of the heroin manufacturer China White. China conducted her business from an island volcano in Fiji, and communicated her orders to Hackett from there. Decade ago, Hackett insinuated his way into the lifestyle of millionaire playboy Oliver Queen. He convinced him to invest in several illegal offshore accounts, though Queen was unaware that the money was being used for drug trafficking. Hackett arranged to meet China White, but Oliver insisted on coming along and they both embarked upon  the "Pacific Ocean" ship. Queen's presence threatened to expose China White's operations, and she ordered Hackett to kill him. As he considered himself Oliver's friend, Hackett couldn't bring himself to murder him in cold blood, so he tossed him over the side of the ship instead. Ollie survived however and encountered Hackett again in Fiji where he learned that he was actually working for China White. The two fought one another, but Ollie managed to get away. When Hackett reported back to China White, she was furious at him for not shooting him in the head  as originally instructed. Hackett in other media. Two characters loosely based on Hackett, David "Dave" Hackett and his son Sam Hackett, appeared 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 depicted in the season one episodes "Pilot" and "Sacrifice" and the season seven episode "Level Two", 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. Twelve years later, in the episode "Past Sins", Sam hacks the DA's 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. Jack Haly (also known as C.C.  Haly) is the ringmaster of Haly's Circus. When the circus came to Gotham City, Haly is confronted by Tony Zucco and Edward Skeevers who demand protection money from the Circus as well as the use of their trucks to transport drugs. When Mr. Haly refuses to give into their threats, Zucco and Skeevers sabotage the trapezes of the Circus' most popular act, the Flying Graysons. This causes the John and Mary to plunge to their deaths, leaving their son Dick Grayson orphaned. Afterwards, Mr. Haly paid the protection money to avoid further incidents. Bruce Wayne assists the Circus on  behalf of Grayson, who he adopts, helping to expose Zucco's part in the tragedy and free the Circus from the threat. Hat. The Hat is a wannabe superhero in the DC Universe. Rampotatek hailed from Japan and had access to a magic hat powered by a demon. He was recruited by Manchester Black to join his team of heroes known as the Elite. The Hat and the team's violent actions led them into conflict with Superman. He and the rest of the team were defeated and stripped of their powers. Head. 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. 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. Headhunter. There have been two different characters named the Headhunter in DC Comics. Mercenary. Within the context of the stories, the Headhunter is a mercenary and nemesis of Batman. The Headhunter first appeared attempting to kill Commissioner Gordon. During the "DC Rebirth" reboot, the 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. Hawkman villain. Within the context of the stories, the 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. Headhunter in other media. A variation of the Headhunter appears in the "Gotham" episode "A Dark Knight: A Day in the Narrows", portrayed by Kyle Vincent Terry. This version has the real name of Wendell. Just like the comics, the Headhunter has a habit of shooting his  victims twice: the first shot to kill the person and the second one as his signature, since he never missed the first shot to the head. At the time when Victor Zsasz was out of town, he recommended his old friend the Headhunter to Oswald Cobblepot to be his replacement security counsel until his return. The Headhunter accompanied Cobblepot when he and his group assisted the Gotham City Police Department into hunting Professor Pyg in the Narrows. Upon both groups falling into Professor Pyg's trap, the Headhunter got wounded until James Gordon destroyed the trap. After falling back to  the Iceberg Lounge due to Professor Pyg having gotten away, the Headhunter stated to Cobblepot that Gordon is right. This causes Cobblepot to stab the Headhunter in the neck with the knife concealed in his cane and then stab him in the chest, stating to the Headhunter that this was "his" signature. In the episode "A Dark Knight: The Sinking Ship, The Grand Applause", the Headhunter gets out of the hospital, where he now wears an eyepatch and meets Sofia Falcone at the time when Victor Zsasz brings him to raid Arkham Asylum to target Cobblepot, only for him to  be sprung from Arkham by Edward Nygma. The two of them encounter Gordon and Harvey Bullock on the streets with Cobblepot, which resulted in a gunfight where Cobblepot got away with Leslie Thompkins. When Sofia Falcone brought Zsasz, the Headhunter and some Falcone crime family operatives to Spa Bo'sh Sumka in order to target Arthur Penn, Zsasz and the Headhunter pursue Bullock and Penn. While the two of them got away in Leslie's car, Zsasz and the Headhunter went out for smoothies when they saw the police cars arriving. Hellhound. Hellhound is the name of two fictional characters appearing  in American comic books published by DC Comics. Kai. Kai was the best student in the Armless Master's dojo in Gotham City. Kai was also a thief, which brought him into conflict with a young Selina Kyle, who "tainted" a religious ceremony he was performing by touching a religious artifact depicting Bast that he had intended to steal himself. After Kai severely beat her for her interference, Kyle followed Kai back to the secret dojo, where the Armless Master welcomed her as a student. She began studying, and quickly showed Kai up in front of his master. Kai soon  learned that Selina had taken on the identity of Catwoman, and, in religious zeal, took it as a sign. Adopting the identity of Hellhound he attempted to force Selina to kill him, believing this would finish the ceremony she had interrupted when they first met, and that he would be reborn as a "true hound of hell". Catwoman scarred his face instead, deepening his already great hatred of her. In the years that followed Kai became a hired mercenary. Eventually he would get his wish and encounter Catwoman once more, coldly informing her that their master had been killed (although  Catwoman is apparently unaware that Lady Shiva was the one to kill her sensei). Hellhound and Catwoman were forced to work together by an archeological relic connoisseur called the Collector, who wanted them to find him an artifact called the Wheel of Plagues. On their dismay, the Wheel was also being sought by Ra's al Ghul, and Catwoman and Hellhound were forced into conflict with Bane. Bane bested them and took the Wheel, and the two fought once again. Catwoman again bested Hellhound, leaving him alive even though he again asked for death. He was later employed by Jackie  Pamerjanian, the drug kingpin of Rheelasia, to protect his crop. Hellhound was forced into conflict with another costumed hero, this time Black Canary. She also defeated Hellhound, and Pamerjanian lost his drugs as the government raided the compound. Hellhound was recently seen serving as the bodyguard of Lew Moxon at the summit of Gotham gang bosses, and was unable to save his boss from being killed by Zeiss, who killed him in the process. Jack Chifford. A second Hellhound has appeared as a member of the supervillain Society in the Villains United mini-series. His real name is Jack Chifford  and he bought his 'villain franchise' from the Calculator i.e. Calculator sold him the costume and right to use the name. This version of Hellhound was among the exiled villains. In "Salvation Run" #2, he was badly wounded by an alien creatures. His fellow villains were ready to abandon him, but the Body Doubles insisted he be brought along. They later feed him to a group of "Lion-lizards" so that the others could escape. Hellhound in other media. Hellhound also appeared in "Justice League Unlimited". He was featured briefly in the opening of the episode "Grudge Match" and was  portrayed as a D-List villain fighting in Roulette's cage matches. In "", Hellhound appears as a mute bodyguard to The Heretic. Cecile Horton. Cecile Horton was the defense attorney for Barry Allen / Flash, who was accused of murdering Professor Zoom, in the storyline "The Trial of the Flash". Cecile Horton in other media. A loose interpretation of Cecile Horton appears in The CW live-action television series "The Flash", portrayed by Danielle Nicolet. Introduced as a guest character in season one before becoming a recurring character in seasons three and four and a main character from season five onward , this version is a human defense attorney who went on to enter a relationship with Joe West after helping him solve metahuman crimes and helping Barry Allen / Flash on several occasions. In season four, similarly to her comic counterpart, Horton became Allen's defense attorney after he was framed for murder by the Thinker. Additionally, she became pregnant and developed prenatal telepathy, which she used to assist Team Flash in defeating the Thinker. As of season five, however, once she gave birth, her powers slowly diminished to empathy. In season six, due to her experience as a metahuman, she becomes  a defense attorney for metahumans. Human Cannonball. 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. Hyena. 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. The second Hyena debuted in "The Fury of Firestorm" #10 (March 1983) and was created by Gerry Conway and Pat Broderick. Both werehyenas had problems with authority and resented Firestorm for interfering in their vendettas. The unique feature of the Hyenas was that they turned into werehyena forms whenever they were under great emotional stress, not only when there  was a full moon. This meant that they could attack foes in broad daylight and that they would revert into their human forms when their emotional tension was relieved. The first Hyena, Summer Day, joined the Peace Corps as a result of relational issues with her father and was turned into a werehyena as a result of 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. The second Hyena, Doctor 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 into the Hyena and infected Jivan with the werehyena curse. Professor Stein noted that being the Hyena seemed to have warped Jivan Shi's mind. 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 and the other appeared as a member of the Injustice League  in "One Year Later" before being shot and killed by Parademons that were attacking the villains' camp. A pack of at least five new werehyenas, presumably suffering from the same curse as Summer and Jivan, were seen in San Francisco some time after the death of their remaining predecessor. They were promptly defeated and permanently returned to human form thanks to Zatanna, the Vixen and the Black Canary. In 2011, "The New 52" rebooted the DC universe. The Hyenas are reintroduced as mercenaries who received special drugs that gave them super-strength and super-velocity, with the side effect of  a constant laugh. During the "Forever Evil" storyline as part of "The New 52", the Summer Day version of the Hyena appears as a member of the Secret Society of Super Villains. The Crime Syndicate sent the Hyena with Black Bison, Multiplex, Plastique and Typhoon to finish Gorilla Grodd's job. The villains were defeated by the Rogues, since one of the targets was the hospital that was treating Captain Cold's sister.