After Sinister dispatched the Marauders into the sewers under New York City to kill the subterranean mutant collective known as the Morlocks, Riptide was responsible for severely injuring X-Men members Nightcrawler and Colossus. Having seen the results of Riptide's actions (Riptide's mutant power to launch barrages of sharp projectiles had enabled him to kill more Morlocks at any given single moment than any other Marauder), Colossus had been pushed close to his emotional breaking point. Colossus was further enraged and grieved when Riptide badly injured Nightcrawler, and finally snapped when Harpoon maimed his former girlfriend, Shadowcat. Colossus lunged at Harpoon to mete out vengeance, but Riptide got in his way, believing that his power would fell the Russian mutant. He boasted to Colossus that hurricane force winds could punch a piece of straw through a solid oak and that his spinning caused his blades to fly even faster than that. Despite being hit by a deluge of blades which penetrated his armored skin, Colossus managed to reach an incredulous Riptide, seize his throat, and snap his neck.
However, Mr. Sinister was able to clone the Marauders thanks to samples of their DNA, and Riptide returned to die once more during the demonic invasion of New York.
Another band of cloned Marauders, including Riptide, later attacked the mutant known as Threnody but were defeated by Nate Grey, the X-Man. Grey used the various Marauders' powers against them, killing all of them with the exception of Riptide. Grey then implanted false memories of the Marauders' having killed Trenody in Quested's mind, arranging things so that the rejection of that memory would destroy Quested's mind. 
A team of Marauders clones also defended one of Mr. Sinister's secret bases against an incursion by Gambit, the mutant Courier, and Sabretooth.
Bodily Rotation and Calcium Generation: Riptide is a mutant with the ability to spin his body at incredibly fast speeds. When he spins, he can generate calcium growth from his bones that protrude through his skin, often taking the form of shuriken and spikes. The additional velocity that comes from his spinning making them lethal missiles that can even punch through steel. He can also create a vacuum suction that draws in nearby objects and also acts as a high-powered sling for objects. Another ability is to be able to make only parts of his body spin, such as only spinning below his head or torso, allowing him to taunt his opponents.