9 Most Shocking Betrayals In Marvel History
2. Gambit - Mutant Massacre
Everyone's favourite Cajun has quite the troubled history. From street brat to master criminal he's always been somewhat outside the law and performed acts that his older and wiser self is not proud of, but anything he may have done in the past pales in comparison to his role in helping Mr Sinister massacre the Morlocks.
Unsure of how to deal with his powers he turns to Sinister for help, who agrees as long as Gambit is willing to do a few jobs for him in return. With no other option available to him he starts to take on missions and one of these has him lead a team know as The Marauders into the tunnels under New York, where they set about slaughtering everyone the can find; this also includes them nearly wiping out the X-Men when they show up to save the day.
It wouldn't be until years later that Gambit's role would come to light when a kiss with Rogue would leave her with his memory of that fateful day, breaking her heart and causing the X-Men to cast him out in one fell swoop.