Several months later, the Horsemen, another team serving Apocalypse, kidnapped Cyclops and Jean Grey, two members of the X-Men who had been members of X-Factor during the battle for Attilan. This was done at the behest of Mister Sinister, who was using his shapeshifting powers to pose as Apocalypse. The Riders, now calling themselves the Dark Riders, raised Apocalypse from his regenerative sleep and told him that somebody was impersonating him. Soon afterwards, Stryfe attacked Apocalypse and his Dark Riders, seeking revenge against Apocalypse. He managed to defeat the Dark Riders, but Apocalypse escaped. The Dark Riders, following Apocalypse's tenet of survival of the fittest, now followed Stryfe.
Apocalypse allied himself with the X-Men, and they fought Stryfe and the Dark Riders. While the X-Men pursued Stryfe, Apocalypse fought the Riders and was fatally wounded by them. The Dark Riders escaped.
Over the next months, the Dark Riders would still follow Apocalypse's teachings and try to 'test' mutants, eliminating all they considered unworthy. They targeted the mind-controlling Mesmero and seemingly killed him, but in fact he used his hypnotic powers to escape. For his weak performance during this fight, the Riders apparently killed one of their own, Psynapse, although he later proved to have survived, and returned to the group. Their next target was Cyclops, who at the time was in discussion with Sinister. Sinister proved himself to be far more powerful than the Riders and warned them not to kill Cyclops, but added that he didn't object to them 'roughing Cyclops up.' Sinister teleported away and the Riders fought Cyclops, who managed to keep the fight to a draw. HardDrive appeared and told Cyclops that he was the first to pass their test. Cyclops tried to convince the Riders to stop with their useless actions, but they teleported away.
Genesis then decided to recruit the X-Man Wolverine to his cause. To further this goal, the Dark Riders broke Wolverine's adamantium-skinned foe Cyber out of prison. Although Genesis led Cyber to believe that he was being recruited to Genesis's cause, Tyler instead fed Cyber to flesh-eating beetles and melted down Cyber's adamantium carapace. Genesis tried to turn Wolverine into one of his soldiers by using this adamantium to replace Wolverine's adamantium skeleton, which had been forcibly removed by Magneto some months earlier. Wolverine's body forcibly rejected both Genesis's brainwashing and the adamantium. The adamantium exploded out of Wolverine's body in the form of shrapnel, which killed Lifeforce and Hurricane. Wolverine then proceeded to kill Deadbolt, Spyne and Genesis himself. Gauntlet was fought, but managed to survive, while Dirtnap escaped. Dirtnap later fought both Wolverine and the anti-hero Venom. In a later battle with the X-Men's mutants-in-training, Generation X, Dirtnap apparently reformed, and seemingly sacrificed himself to save the young heroes.
{| class="wikitable" width=100%
!width=15%| Character
!width=20%| Real Name
!width=20%| Joined in
!width=45%| Notes
|-
||Gauntlet
||Unknown
||X-Factor #65 (April 1991)
(First appearance)
||Inhuman, field leader, enhanced strength, has an arsenal of advanced weaponry
|-
||Foxbat
||Unknown
||X-Factor #65 (April 1991)
(First appearance)
||Winged, taloned Inhuman, though mentioned as a mutant in Cable #17, apparently killed by Lifeforce in Cable #19.
|-
||Barrage
||Unknown
||X-Factor #65 (April 1991)
(First appearance)
||Inhuman, has energy-cannons for arms. Left for dead in X-Man #46, but status unconfirmed.
|-
||Psynapse
||Unknown
||X-Factor #65 (April 1991)
(First appearance)
||Inhuman telepath, cousin to Medusa and Crystal, somehow manages to reactivate the telepathic powers of Jean Grey and later of Nate Grey when trying to kill them, died in X-Man #46, appeared alive again in same issue.
|-
||Tusk
||Unknown
||X-Factor #65 (April 1991)
(First appearance)
||Inhuman, with superhuman strength and durability, and able to create many smaller versions of himself known as Underlings. The original version was sometimes referred to as Tusk Prime.
|-
||HardDrive
(sometimes spelled "Hardrive"; once referred to as Mainframe)
||Unknown
||X-Factor #65 (April 1991)
(First appearance)
||Inhuman, merged with technology, allowing him to teleport others, control machinery, and transform his body. Leader, left for dead in X-Man #46, but status unconfirmed.
|-
||Spyne
||Unknown
||Cable #17 (November 1994)
(First appearance)
||Mutant, monstrous body, with fangs, claws and tail. Was killed by Wolverine in Wolverine #100.
|-
||Lifeforce
||Unknown
||Cable #17 (November 1994)
(First appearance)
||Mutant, drained life-energies by touch to amplify her own strength, killed Foxbat, was killed in Wolverine #100.
|-
||Hurricane
||Unknown
||Cable #17 (November 1994)
(First appearance)
||Mutant, wind controlling powers, was killed in Wolverine #100.
|-
||Deadbolt
||Unknown
||Cable #17 (November 1994)
(First appearance)
||Mutant, skeletal body, threw bones as weapons, was killed in Wolverine #100.
|-
||Genesis
||Tyler Dayspring
||Cable #18 (December 1994)
||Mutant, leader, son of Cable, was killed in Wolverine #100
|-
||Dirtnap
||Unknown
||Wolverine #99 (March 1996)
First appeared in Wolverine #95 (November 1995)
||Mutant, body-snatcher, was killed in Generation X #39.
|-