Gambit in the AoA

In the Age of Apocalypse, Gambit was the leader of a group of mutant outlaws called the X-Ternals, which consisted of Lila Cheney, Jubilee, Sunspot and Strong Guy.

At one time, however, he had been a close friend of Magneto's and a member of his resistance. He was also in love with Magneto's ward, the untouchable Rogue, who clearly reciprocated his feelings. Knowing how much Rogue meant to him, Magneto promised him that he would find a way for Gambit to touch her, but betrayed him by instead marrying her himself. (To understand the full vileness of this, remember that Mystique had placed Rogue in Magneto's care and he was a father-figure to her, as well as the fact that she was probably underage.) Naturally, Gambit was furious and broke all ties with Magnus and his team, forming his own group of rebels and starting up a relationship with Lila Cheney which, while not loveless, was always haunted by his former affair with Rogue.

However, when Magneto's team rescued Bishop and discovered the key to fixing the mess that was the AoA, Magneto was quick to call on Gambit. The mission was astoundingly difficult. He had to travel to the Shi'ar Imperium to retrieve a shard of the M'Kraan Crystal (the nexus of all realities) through which they could travel back in time. Ironically, he knew that he could trust him not to fail because he would not disappoint Rogue.After many setbacks and the sacrifice of the truest part of himself, Gambit managed to obtain the M'Kraan Crystal, but lost it through Strong Guy's betrayal. In a nutshell, he was forced to choose between the Crystal (and Charles, Rogue's baby) and Lila, and, having no other option, chose the latter.
The task of retrieving the M'Kraan Crystal fell to Magneto's team, and, although they were successful and the timeline was restored to the way it should be, the rebels were wiped out in a last-ditch, nuclear bomb attack on Apocalypse's domain in America by the humans.

Gambit in Mutant X

In the Mutant X reality, Gambit was a vampire and the leader of the United Guilds of New Orleans. Although he asked to be changed into a vampire to save his life, he hates who he is as well as the fact that he has to feed on people to survive. He also is resentful towards Bloodstorm for agreeing to bite him, despite the fact that she was reluctant to do so.

It happened on a mission to obtain two children - one of whom Gambit would later adopt and the other who would become X-Man - for Sinister from Apocalypse's laboratory. As Gambit and Bloodstorm were partners in crime as well as lovers, she accompanied him and helped him infiltrate the building. Unfortunately, they were not stealthy enough as the Fallen detected them and attacked them. Gambit was critically injured and begged Ororo to change him into a vampire in order to save him, despite her reticence.

Despite his condition, he managed to have some semblance of a normal life, and his marriage to Belladonna cemented the alliance between the Thieves' and the Assassins' Guilds. Under his leadership, New Orleans became a safe zone for both humans and mutants, seperate from the politics of the United States. However, when his brother-in-law, Julien, betrayed him to Bastion, resulting in the death of Belladonna and the kidnapping of his adopted daughter, he chose to join the Six in order to get revenge, as well as rescue his child.

Wraith

In Amalgam's JLX, a combination of the X-Men and the Justice League, Todd Gambit was known as Wraith. He obtained a magical set of playing cards in a New Orleans bar that allowed him to focus for mutant ability to change into a shadowy form. His powers also allowed him to touch Runaway, Rogue's JLX counterpart. However, because she absorbed some of his darkness, she was gradually being driven insane, becoming reckless and evil.

He joined Mr X's JLX, which was formed from the ranks of the Judgement League Avengers, and helped him find Atlantis, a long-lost mutant haven.

(Note: All the characters in JLX were amalgams of heroes in the X-Men and in the JLA. Consequently, Wraith was not precisely Gambit, so much as a combination of his traits with Obsidian's.)

New Son

New Son was a Gambit born in his reality's foremost mutant research and genetic planning facility. Much like the children in "Dark Angel", he was trained for the use and exploitation of his mutant powers. When he hit adolescence, however, he was skilled enough to incinerate the facility and escape. He, then, made his way to the X-Men, where he found a home for a few years until he killed that world's Phoenix.

He was banished from the team and spent some years both as an ally and foe of various superhumans. When he was 18, however, he was taken in by Jean-Luc LeBeau, whom he called his friend and mentor. While with the Guilds, he was informed of the prophecies of the Resurrection of the Old Kingdom and his role in them. They were meant to bring about heaven on earth, meant to lead everyone as one into the shining light of the sun. In a tragic sense, they did. Instead of the utopia for which the Guilds had hoped, the energies of the Old Kingdom when combined with his biokinetic powers created an uncontrollable cascade of energy that destroyed everyone and everything save the New Son.

Ravaged by guilt and grief, he tried to undo his actions, to control time by controlling the flow of kinetic energies, but could only manage to breach the space between multiverses and travel to other realities.

So, he decided to prevent his alternate counterparts from making the same tragic mistake as he had.

X-Men: Evolution's Gambit

Next to nothing is known of Evolution's Gambit at the moment other than the fact that he is working for Magneto and that he has his normal, kinetic-charging powers. He might also have his charm, because he certainly seemed to have Rogue mesmerised at one point in the show. More is promised to be revealed next season so watch this spot and enjoy these pictures in the meantime!