Julien

Belle's brother and the jerk responsible for Remy being thrown out of the Thieves Guild. He refused to allow the war to stop, and attacked Remy during the wedding that would have brought peace. Remy was forced to kill the man, and because of that he was kicked out. Both families lost a son that way, and so the balance was maintained.

Julien was later brought back by Candra's immortality potion, but it did hideous things to him, and he soon died a second death.

Mr. Sinister / Nathaniel Essex

The dark man who hired Remy to lead the Marauders down into the tunnels in order to kill the Morlocks. Remy had no idea what the true agenda was and tried to stop the Marauders, but was nearly killed in the process.

Sinister claims that the two have unfinished business that will eventually play itself out. There are strong suggestions that there will be a lot of goings on in the future between these two

Sabretooth

This man has been bothering Remy for years. First he nearly kills Henri and then turns out to be one of the Marauders. He's also the one who nearly killed Remy when he tried to defend the Morlocks.

The two have a history, and not at all a pleasant one.

Marius Boudreaux

This is Belle's father and at one time was the head of the Assassins Guild. He's since then died, allowing Belle to take over the Guild. How did he die? I've not been able to find out how. Maybe someone will be kind enough to tell me.

There's really not much to say about the man.

Arcade

Arcade was othe main villian who played all kind of his evil games in the slight Gambit and Wolverine series.

Batroc

One of the many assassin mercenaries that New Son had hired to test Gambit and his skills through their assassination attempt.

Bullseye

Bullseye was another one of the assassin mercenaries that New Son hired for Gambit's test. Being the one closest to defeating Gambit, he nearly killed him in the attempt, but Gambit managed to escape his doom.

Crossbone

Yet another assassin mercenaries which was called upon by New Son was Crossbone, one villian of the might Captain America.

Deadpool / Wade Wilson

Deapool being on my favorite characters, he was also called upon by New Son, but then later let Gambit go when he had a chanced.

Grovel

Grovel appeared with Spat, they both appeared when Gambit and the rest of the X-Men returned from the Shi'ar galaxy and were being held by Nanny. They intended to take Gambit to Antarctica for his "trial". And Spat sure had a chip on her shoulder about something Gambit had done to her in the past, some kind of betrayal...

Mystique / Raven Darkholme

Mystique, a shape shifter, once impersonated Gambit as she attempted to asassinate Senator Robert Kelly. Gambit helped foil her attempt, and managed to prove his innocence.

New Son

An alternate reality Gambit that (in his reality) was brought up within a mutant research and genetic planning facility. In his universe, New Sun fought with both the X-Men, and for and against Earths other heroes. The alternate reality Jean-Luc LeBeau was a mentor to New Sun, and helped New Sun fulfill the prophecies of Le Diable Blanc (the resurrection of the old kingdom and heaven on earth). To fulfill this prophecy New Sun had the energies of the Long-Dead Kings channeled into him, which caused his bio-kinetic powers to destroy the planet.

Neo

Neo was a member of a clan that tried to kill Gambit.

Spat

Spat appeared with Grovel, they both appeared when Gambit and the rest of the X-Men returned from the Shi'ar galaxy and were being held by Nanny. They intended to take Gambit to Antarctica for his "trial". And Spat sure had a chip on her shoulder about something Gambit had done to her in the past, some kind of betrayal...