Mr. Sinister Appears
Having returned from a failed attempt to kill the wife of Cyclops, leader of X-Factor, the villainous Marauders came face to face with their mysterious leader - Mr. Sinister. Enraged, he showed his displeasure by throttling an arrogant Sabretooth before sending his assassins out once again to kill Madelyne Pryor. As time went on Mr. Sinister would continue to be malevolent presence in the lives of the X-Groups.