Trivia: After Bishop travels into the past, he hears one kid telling another that they will be playing the new Punisher game "Assassin." When the Punisher was first being developed, he was originally going to be called The Assassin.
Trivia: The storyline for this two-part episode is an amalgamation of the "Days of Future Past" story from the comics and of Bishop's future where he suspected Gambit of betraying and murdering the X-Men.
Rogue rips off Donald Pierce's cybernetic left arm, but when he is first shown running away, his right arm is the one that is missing. When he catches up with Sebastian Shaw in the secret passageway, his left arm is back to being the one missing.