This deadly group of mutants was responsible for the greatest tragedy to befall mutantkind: The Morlock Massacre. Assembled by Gambit on Sinister's orders, the Marauders (led by Sabretooth) were let into the Morlock tunnels, where they commenced a slaughter. The X-Men and X-Factor tried to stop the killing, but were themselves gravely injured. While some of the Marauders were killed in the Massacre and later, during Inferno, their DNA remains in Sinister's records, and consequently, they are cloned time and again in his service.
It should be noted that Polaris was possessed by Malice the entire time that she led the Marauders. Lorna Dane's personality was never in control.
* Marauders' real names provided by Shac, ostensibly from the Wolverine
Encyclopedia: I can't vouch for their authenticity.
