Janos Quested alias, Riptide was a member of the Marauders, a team of villains brought together by the mutant thief Gambit at the request of Mister Sinister.
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.
After the events of M-Day, where a mentally ill Scarlet Witch removed the mutant gene from the majority of the world's mutant population, Riptide retained his powers. Riptide was one of the Marauders, who, alongside old members and a number of new ones, attacked the X-Men.
Bodily Rotation and Shuriken Generation: Riptide is a mutant with the ability to spin his body at an incredibly fast rate. Upon reaching his top speed, Janos generates his own shuriken while he is spinning, his skin secretes a substance that instantly crystallizes into razor-sharp snowflake-like shapes. Riptide then hurls the shuriken at such a high velocity that they can punch through steel.