Sabretooth
Mr. Sinister is one of Gambit's most hated foes. He was the reason Gambit has so many secrets. Gambit knows Sinister because he worked ofr him in many cases. Mostly robbing. But Gambit never knew what kind of a man Nathanial Essex was. he iddn't know him as Sinister. On Gambit's final job he was told to recruite the Marauders. he didn't know that he was leading Sinister right into the Morlocks. Thats made him become part in the Mutant Massacre Thats is why he hates him so much. Gambit visits the site of the Morlocks graves every end of the week. 
