Hounds are the name given to several fictional groups of mutant characters appearing in American comic books published by Marvel Comics. This term usually refers to those who track or hunt down mutants while serving a higher authority. History Days of Future Past The Hounds were first introduced in Uncanny X-Men, from the "Days of Future Past" dystopian timeline, as part of the backstory of Rachel Summers. These brainwashed mutant hunters were created and commanded by the cyborg Ahab, who used them to hunt down and imprison mutants in concentration camps. Rachel was forced to become one of these Hounds while still an adolescent, which scarred and haunted her for years afterward. Eventually she broke her conditioning and rebelled. As a result, Rachel was sent to the camps herself as punishment. Shadow King's Hounds Shadow King is later seen to use mind-controlled humans called Hounds to track Storm, who had been transformed into a child by the villainous Nanny. These Hounds were reduced to a nearly mindless, animalistic state by the Shadow King apparently for his own amusement. Other versions Age of Apocalypse In the Age of Apocalypse reality, the Hounds are mutants used to hunt down and imprison mutants and humans in concentration camps or simply to kill their targets. Sabretooth was used as the leading Hound to the Horsemen until his defection. Wild Child was too ferocious that he was kept a prisoner until Sabretooth rescued him. Caliban was used as the prime hound to the Bounty Hunters. Wolverine was a mutant altered by Beast who served Holocaust as his leading hunter after the defection of Sabretooth. Spider-Verse In the "Spider-Verse" storyline, the Hounds of Earth-001 are servants of Verna of the Inheritors. They consist of Sable, Fireheart, Kravinoff, five different Vultures, the Scorpion, the Rhino, Hammerhead, Ox, a Hobgoblin, and various Green Goblins. Sable, Fireheart, and Kravinoff of the Hounds accompany Verna to Earth-1610 to hunt Miles Morales. Miles Morales and Jessica Drew struggle to hold off Verna's Hounds. Verna laments that the hunt is over before it began. Superior Spider-Man (Otto Octavius's mind in Peter Parker's body), Assassin Spider-Man, and Spider-Punk emerge from a portal and immediately incapacitate the Hounds. While Verna mourns the deaths of her Hounds, Miles looks at the shattered gravestone of his mother and says she made things personal between them with Verna furiously responding that she will feast on his bones.