During the time in the Justice League/Avengers crossover that the Marvel and DC universes temporarily merged, the original Deadpool died offscreen. He was instantly brought back to life since nobody stays dead in superhero comics but due to some sort of weird paradox caused by his being a parody of Deathstroke and the two of them co-existing in the same temporarily-merged universe, he came back as a completely different person with a different Backstory. This sudden Retcon-induced loss of identity coupled with contradictory memories he realized that he was a character in a comic book and none of what had happened was even real.
- This would also explain all the confusion with T-Ray. The original, darker Deadpool that was more recognizably a Deathstroke rip-off came back to life after the universes split back into Marvel and DC. When he went to reclaim his place, he found someone else claiming to be him and took on the name T-Ray.
- Both Deadpool and T Ray are Wade WilsonMercedes married a guy named Wade Wilson. Wilson is not such an uncommon name, and neither is Wade. The Wade Wilson she married became T Ray. The name of man saved from the river was not Jack. He was, however, a mercenary. The events T Ray recalled are simply a big misunderstanding, and after he accidentally killed Mercedes, Deadpool went a bit crazy (not insane) and his memor defected so he would think he was Mercedes's husband.