While many Marvel's evil pastiche of Superman. Raised as an expert thief, Gambit was initially treated with distrust by the other X-Men, but he has since been accepted as a trusted teammate, all while taking control of the Thieves Guild and marrying longtime love interest Rogue.
Gambit is powerful enough that a version of Remy LeBeau was recruited into the multiversal Weapon X. This team were formed by a race known as the Timebreakers, who sought to repair the damaged timeline by sending specialist teams to different realities with the mission to correct abnormalities. While the heroic Exiles dealt with more morally justifiable tasks, Weapon X were selected for their ruthlessness and power, and were generally tasked with assassinating those who the Timebreakers believed needed to be 'pruned.' Unlike his brutal teammates - versions of Spider-Man, She-Hulk, Deadpool and more, each plucked from an alternate reality - the Gambit of Earth-371 went about his work without enthusiasm, simply hoping to do enough that he'd be allowed to return home.
Sadly, it wasn't to be, as the addition of Hyperion to the team led them to rebel against the Timebreakers, seeking to rule the worlds they were sent to rather than fix them. When Hyperion grew out of control, this Gambit sided with the Exiles to take him down. A whole host of heroes helped to keep Hyperion busy, but it was Gambit who struck the killing blow, charging Magik's Soulsword with as much energy as he could muster. The resulting explosion killed both him and Hyperion. Hyperion is Marvel's 'evil Superman,' but it's worth noting that even in that context, the version Gambit killed (known as King Hyperion) was particularly powerful, having killed his own reality's versions of Thor, Hulk, and Galactus. Gambit strikes the killing blow in Exiles #45, from Chuck Austen and Jim Calafiore.
How Gambit Was Able to Obliterate Hyperion
Sadly, Hyperion's unique biology allowed him to later resurrect by absorbing the unique extradimensional energies of the Timebreakers, but Marvel has confirmed since that Gambit's strike was a killing blow, and sufficient to destroy Hyperion. This may be surprising to those who are used to Gambit throwing playing cards, but it's worth keeping in mind that Gambit is able to charge non-biological material according to its mass. While his powers can make cards explode with the force of hand grenades, a weapon like the Soulsword allows for far more juice, and Gambit's powers were even able to kill Galactus in the reality of Marvel Zombies: Resurrection. Gambit's powers tend to scale with the item he's charging, and his upper limit is apparently capable of destroying a Superman-level threat in one shot.
It's worth noting that while Gambit doesn't tend to use the upper limits of his powers, they are depicted pretty consistently - even up against all of Marvel's heroes in Contest of Champions II, Gambit still made the final round alongside such heavyweights as Hulk and Jean Grey. Weapon X's Gambit was a tragic antihero, and one who gave his life to stop a world-ending threat at the cost of never returning home. However, in possessing the same powers as the main timeline's Gambit, he was also a chance for fans to see what the X-Men hero can do when fully unleashed, with even Marvel's Superman proving no match for a Remy LeBeau who was done holding back.
