History
When he was looking for Rogue in an abandoned Genoshan prison, Deadpool hallucinated that one of the rooms was a disco, and Gambit was its DJ.[1]
Samples of Gambit's DNA were also used by Mister Sinister for a faction within his army of clones, whose members permanently discharge kinetic energy (and, as a side effect, can only repeat the phrase "mon ami"). As such, making contact with another person will cause them to explode.